CN105357455A - Method and device for a 4K display to display video sources with one screen - Google Patents
Method and device for a 4K display to display video sources with one screen Download PDFInfo
- Publication number
- CN105357455A CN105357455A CN201510846134.XA CN201510846134A CN105357455A CN 105357455 A CN105357455 A CN 105357455A CN 201510846134 A CN201510846134 A CN 201510846134A CN 105357455 A CN105357455 A CN 105357455A
- Authority
- CN
- China
- Prior art keywords
- hdmi
- module
- video
- display
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/14—Display of multiple viewports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
Abstract
The invention discloses a method and device for a 4K display to display video sources with one screen. The device comprises a four-path HDMI input interface, a two-path HDMI output interface, an HDMI receiving module, an HDMI sending module, a video processing, a DDR3 storage module and a power supply module. The HDMI receiving module converts video data sent from the four-path HDMI input interface into general RGB video data. The HDMI sending module converts the RGB video data into video data that accords with HDMI format, and the video data is sent to and displayed by a 4K display through the HDMI interface. Other types of auxiliary software are not needed, splicing of screens is not needed, and four different paths of 1080P video sources can be sent to a common 4K display screen and displayed at the same time so people can conveniently view the video sources. The device is low in cost and simple in structure, and is suitable for occasions where the space is limited and where people need to view many paths of videos at the same time.
Description
Technical field
The present invention relates to the Display Technique field of video, the method for specifically a kind of control 4K display image display and device, realize different 1080P video source to be simultaneously displayed on 4K display screen.
Background technology
Along with the development of science and technology, the size of display screen is increasing, also supports multichannel information source input signal simultaneously, but at one time in, display screen still can only show the signal of a road information source input, if want the content seeing other information source, can only realize by switching information source operation.
If want to realize multiple video source to show simultaneously, one method adopts multi-screen splicing mode exactly, the background broadcasting system that such as TV station is large-scale, this method drops into huge, treatment facility is expensive, and need to take a large amount of spaces, inapplicable for the utilization scene of some fund and limited space.Another method is the two aobvious technology of a screen of current trend, adopt 3D elongation technology, wearing spectacles is with in not bespectacled situation, the video content seen is different, but this technology also can only show the content of two passages, the defect such as inconvenience of the flicker that display effect is come due to picture frame frequency low strap and wearing spectacles, the market response is little always to cause this technology.
Along with the maturation of 4K technology, 4K display and 4K TV also more and more obtain everybody accreditation and welcome.The resolution of 4K display screen is equivalent to the resolution of the 1080P HD video of 4 times, can put down 4 road 1080P HD videos in theory in a display screen simultaneously.Utilize 4K display to realize HD video one to shield and many aobvious there are bright prospects, can extensively apply in the scenes such as house ads, cell monitoring, vehicle-mounted real-time monitoring.
Summary of the invention
A kind of 4K display one that the object of the invention is to provide for the deficiencies in the prior art shields many aobvious methods and device, realize by four tunnels independently 1080P video source be shown on 4K display simultaneously.
Object of the present invention is achieved through the following technical solutions:
4K display one shields many aobvious methods, and feature is that the method comprises following concrete steps:
HDMI signal is decoded, is reduced into the RGB data signal of signal source, and according to row field sync signal, be numbered to each RGB data signal;
Number with the RGB of the channel number and respective channel that input information source and be combined as address code, according to address code by the buffer area of each road RGB data signal storage to correspondence;
Using address code as index unit, take out RGB data signal corresponding in buffering area;
Produce the row field sync signal of 4K video, export corresponding RGB data signal according to synchronizing signal;
Synchronizing signal and rgb signal are carried out code conversion, is converted to HDMI format signal, output on 4K display and show.
When described HDMI number of signals is less than four, then corresponding on 4K display region display black.
A kind of 4K display one shields many aobvious devices, feature is that this device comprises: four road HDMI input interfaces, two-way HDMI output interface, HDMI receiver module, HDMI sending module, video processing module, DDR3 memory module and power supply module, and described power module connects HDMI receiver module, HDMI sending module, video processing module and DDR3 memory module, provides Power supply for each module; Four road HDMI input interfaces connect HDMI receiver module; Two-way HDMI output interface connects HDMI sending module, and HDMI receiver module, HDMI sending module connect video processing module respectively; DDR3 memory module connects video processing module.
Described video processing module is FPGA.
Described DDR3 memory module is that two panels DDR3 stores particle, carries out buffer memory to view data.
The incoming end of described four road HDMI input interfaces connects the video equipment supporting that 1080P HD video source exports, and described two-way HDMI output interface connects common 4K display screen, realizes different for four tunnels input video source to be simultaneously displayed on 4K display screen; Its video exported is duplicate mirror-image copies, adds the extensibility of video frequency output.
Compared with prior art, the invention has the beneficial effects as follows:
(1), four road 1080P video images can be realized to be simultaneously displayed in a 4K display screen, not need display screen support to spell screen function, nor need display screen to run software kit.
(2), circuit structure is simple, with low cost.
(3), realize between different video image seamless link, overcome and spell the shortcoming that screen exists gap between image.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structured flowchart;
Fig. 2 is the inventive method flow chart;
Fig. 3 is video processing module structured flowchart of the present invention;
Fig. 4 is apparatus of the present invention workflow diagram.
Embodiment
Consult Fig. 2, the inventive method comprises:
Step one, decodes HDMI signal, is reduced into the RGB data signal of signal source, and according to row field sync signal, to each RGB(color space) data-signal is numbered;
HDMI signal transmits video and have employed three-channel TMDS(transition minimized differential signaling) signal transmission, object is that transfer rate is fast, but is unfavorable for process and transmission.So, first need HDMI signal to decode, be converted to RGB data signal, be convenient to process and the storage of signal.
Step 2, numbers with the RGB of the channel number and respective channel that input information source and is combined as address code, according to address code by the buffer area of each road RGB data signal storage to correspondence;
Because equipment has four tunnel HDMI video input equipments, and each RGB data signal, a pixel on all corresponding display, therefore, each RGB can be numbered according to position, the joint passage number, just can be stored in the buffer area of corresponding address by the RGB data on each pixel, convenient reading.
Step 3, using address code as index unit, takes out RGB data signal corresponding in buffering area;
When video frequency output, once can take out the RGB data signal of a source signal a line, also once can take out the RGB data of multi-information source a line simultaneously, form data flow.
Step 4, produces the row field sync signal of 4K video, exports corresponding RGB data signal according to synchronizing signal;
The driving of 4K display, there is corresponding display format, line synchronizing signal, field sync signal, data are needed to export useful signal etc., because they are different with the display of 1080P video, directly can not utilize the row field sync signal of input, so according to the call format of display, these synchronizing signals can only be produced, and the sequential of RGB data according to correspondence exported.
Step 5, carries out code conversion by synchronizing signal and rgb signal, is converted to HDMI format signal, outputs on 4K display and shows;
Rgb signal and synchronizing signal, need to send 4K display to by HDMI wire, need signal to encode, and with the standard of applicable video, is convenient to transmission.
Consult Fig. 1, for realizing the inventive method, the invention provides a kind of device, this device comprises four road HDMI input interfaces 1, two-way HDMI output interface 7, HDMI receiver module 2, HDMI sending module 6, video processing module 4, DDR3 memory module 5 and power module 3, and described power module 3 connects HDMI receiver module 2, HDMI sending module 6, video processing module 4 and DDR3 memory module 5, provides Power supply for each module; Four road HDMI input interfaces 1 connect HDMI receiver module 2; Two-way HDMI output interface 7 connects HDMI sending module 6, HDMI receiver module 2, HDMI sending module 6 and connects video processing module 4 respectively; DDR3 memory module 5 connects video processing module 4.
Consult Fig. 3, the video processing module 4 of apparatus of the present invention is FPGA, it comprises input fifo module 41, input FIFO control module 42, input/output control module 43, export FIFO control module 44, export fifo module 45, DDR3 driver module 46 and DDR3 interface module 47, video processing module realizes the data of different for four tunnels passage rgb signal to be stored in the corresponding address of DDR3 memory module 5, and the RGB data in DDR3 memory module 5 is exported according to correspondence order when needing to export, produce the row field sync signal driving the display of 4K display screen simultaneously.
Consult Fig. 4, for PC as HDMI HD video output source, describe the course of work of apparatus of the present invention:
1) HDMI 1 of device receives 1080P video source, through HDMI receiver module 2, different video source signal is decoded respectively, restore the RGB data signal of various information source signal, row field sync signal, data valid signal are sent to video processing module 4 i.e. FPGA together with RGB data.
2) when FPGA detects that field sync signal is effective, and when current DDR3 memory module 5 init state completes, FPGA starts to receive rgb video data-signal, and produces address code.
3) RGB data of reception is stored into the buffer area of the DDR3 memory module 5 of different address by FPGA according to different address code.
4) when HDMI sending module 6 allows to export, FPGA starts output video data, first produce the clock signal such as row field sync signal and data valid signal according to the form sequential of 4K video, the order of the corresponding region then shown on a display screen by video, from the buffer area of the DDR3 memory module 5 of correspondence, read RGB data respectively, and send clock signal and data to HDMI sending module 6.
5) HDMI sending module 6 transfers RGB data Video signal encoding to HDMI format signal, by HDMI output interface 7, sends 4K video display to, and 4K video display shows four road signals simultaneously.
Claims (6)
1. 4K display one shields many aobvious methods, and it is characterized in that, the method comprises following concrete steps:
HDMI signal is decoded, is reduced into the RGB data signal of signal source, and according to row field sync signal, be numbered to each RGB data signal;
Number with the RGB of the channel number and respective channel that input information source and be combined as address code, according to address code by the buffer area of each road RGB data signal storage to correspondence;
Using address code as index unit, take out RGB data signal corresponding in buffering area;
Produce the row field sync signal of 4K video, export corresponding RGB data signal according to synchronizing signal;
Synchronizing signal and rgb signal are carried out code conversion, is converted to HDMI format signal, output on 4K display and show.
2. method according to claim 1, when it is characterized in that described HDMI number of signals is less than four, then corresponding on 4K display region display black.
3. a 4K display one shields many aobvious devices, it is characterized in that this device comprises: four road HDMI input interfaces, two-way HDMI output interface, HDMI receiver module, HDMI sending module, video processing module, DDR3 memory module and power module, described power module connects HDMI receiver module, HDMI sending module, video processing module and DDR3 memory module, provides Power supply for each module; Four road HDMI input interfaces connect HDMI receiver module; Two-way HDMI output interface connects HDMI sending module, and HDMI receiver module, HDMI sending module connect video processing module respectively; DDR3 memory module connects video processing module.
4. device according to claim 3, is characterized in that: described video processing module is FPGA.
5. device according to claim 3, is characterized in that: described DDR3 memory module is that two panels DDR3 stores particle, carries out buffer memory to view data.
6. device according to claim 3, it is characterized in that: the incoming end of described four road HDMI input interfaces connects the video equipment supporting that 1080P HD video source exports, described two-way HDMI output interface connects 4K display screen, realizes different for four tunnels input video source to be simultaneously displayed on 4K display screen; Its video exported is duplicate mirror-image copies, adds the extensibility of video frequency output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510846134.XA CN105357455A (en) | 2015-11-30 | 2015-11-30 | Method and device for a 4K display to display video sources with one screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510846134.XA CN105357455A (en) | 2015-11-30 | 2015-11-30 | Method and device for a 4K display to display video sources with one screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105357455A true CN105357455A (en) | 2016-02-24 |
Family
ID=55333305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510846134.XA Pending CN105357455A (en) | 2015-11-30 | 2015-11-30 | Method and device for a 4K display to display video sources with one screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105357455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105847927A (en) * | 2016-05-09 | 2016-08-10 | 华东师范大学 | Multi-source multi-mode high-speed video wireless synchronous display apparatus |
| CN106375831A (en) * | 2016-09-21 | 2017-02-01 | 华东师范大学 | FPGA-based multi-dynamic video floating window system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080024666A1 (en) * | 2006-07-25 | 2008-01-31 | Sharp Kabushiki Kaisha | Picture display device, picture display method, picture display program, and storage medium |
| CN101692331A (en) * | 2009-09-29 | 2010-04-07 | 沈阳火炬北泰数码科技有限责任公司 | Digital image signal decomposing and regenerating device and control method |
| CN103024319A (en) * | 2012-12-28 | 2013-04-03 | 深圳Tcl新技术有限公司 | Method and device for controlling television set to display multiple things with display screen |
| CN103369396A (en) * | 2012-03-29 | 2013-10-23 | 株式会社东芝 | Video processor and video processing method |
| CN104767958A (en) * | 2015-04-14 | 2015-07-08 | 深圳市晶日盛科技有限公司 | Video point-to-point stitching system based on FPGA |
| CN205212951U (en) * | 2015-11-30 | 2016-05-04 | 华东师范大学 | 4K display screen devices that show more |
-
2015
- 2015-11-30 CN CN201510846134.XA patent/CN105357455A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080024666A1 (en) * | 2006-07-25 | 2008-01-31 | Sharp Kabushiki Kaisha | Picture display device, picture display method, picture display program, and storage medium |
| CN101692331A (en) * | 2009-09-29 | 2010-04-07 | 沈阳火炬北泰数码科技有限责任公司 | Digital image signal decomposing and regenerating device and control method |
| CN103369396A (en) * | 2012-03-29 | 2013-10-23 | 株式会社东芝 | Video processor and video processing method |
| CN103024319A (en) * | 2012-12-28 | 2013-04-03 | 深圳Tcl新技术有限公司 | Method and device for controlling television set to display multiple things with display screen |
| CN104767958A (en) * | 2015-04-14 | 2015-07-08 | 深圳市晶日盛科技有限公司 | Video point-to-point stitching system based on FPGA |
| CN205212951U (en) * | 2015-11-30 | 2016-05-04 | 华东师范大学 | 4K display screen devices that show more |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105847927A (en) * | 2016-05-09 | 2016-08-10 | 华东师范大学 | Multi-source multi-mode high-speed video wireless synchronous display apparatus |
| CN105847927B (en) * | 2016-05-09 | 2018-08-24 | 华东师范大学 | High-speed video wireless synchronization display device under multiple source multi-mode |
| CN106375831A (en) * | 2016-09-21 | 2017-02-01 | 华东师范大学 | FPGA-based multi-dynamic video floating window system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI529656B (en) | Image display system and image processing method | |
| CN101819755B (en) | Monitor joined screen with function of displaying multi-channel video signals and realization method thereof | |
| US10511803B2 (en) | Video signal transmission method and device | |
| CN201869295U (en) | Liquid crystal display television system with multiple observation areas | |
| CN102103826A (en) | Light emitting diode (LED) display screen splicing control system and LED display screen | |
| CN201577135U (en) | Matrix with multiple input formats and high rate | |
| CN103581570A (en) | Large-size screen splice system and method based on multi-media communication | |
| CN202363090U (en) | Multi-screen display device | |
| CN102857738A (en) | Multi-screen control image display system, multi-screen control method and multi-screen control device | |
| CN111064906A (en) | Domestic processor and domestic FPGA multi-path 4K high-definition video comprehensive display method | |
| CN102611869A (en) | Output-oriented network transmission technique of multi-screen splicing system | |
| CN104954812A (en) | Video synchronized playing method, device and system | |
| CN101102487A (en) | Video transmission system and method based on VGA and HDMI display mode | |
| CN103248797A (en) | Video resolution enhancing method and module based on FPGA (field programmable gate array) | |
| CN202475590U (en) | Video preprocessing apparatus | |
| CN104092969A (en) | Television wall splicing system and method based on Display Port | |
| CN108156511B (en) | Method and system for realizing double-screen or multi-screen splicing display | |
| CN107249107B (en) | Video controller and image processing method and device | |
| CN211184115U (en) | Vehicle-mounted display control terminal with multi-channel video display function | |
| CN102497526B (en) | Method and system for displaying multiple channels of video by same link | |
| CN104702859A (en) | Ultra-high-definition splicing system and splicing method thereof | |
| CN103037169A (en) | Picture split joint combination method of embedded hard disk video | |
| CN101986707A (en) | Decoder system and method capable of supporting display wall output | |
| CN205212951U (en) | 4K display screen devices that show more | |
| CN105357455A (en) | Method and device for a 4K display to display video sources with one screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |
|
| RJ01 | Rejection of invention patent application after publication |