CN104378646A - Video coding display system - Google Patents
Video coding display system Download PDFInfo
- Publication number
- CN104378646A CN104378646A CN201410655906.7A CN201410655906A CN104378646A CN 104378646 A CN104378646 A CN 104378646A CN 201410655906 A CN201410655906 A CN 201410655906A CN 104378646 A CN104378646 A CN 104378646A
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- China
- Prior art keywords
- signal
- vga
- display system
- distributor
- video coding
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a video coding display system which comprises an image main board and a power panel. The image main board is connected with a coding panel and a displayer. The image main board is connected with a VGA input connector. The coding panel is connected with a network output connector. The power panel supplies power to the image main board, the coding panel and the displayer, so that a video source is displayed on the displayer through the image main board, and the other video source enters the encoding panel to be converted into digital signals transmitted in a network.
Description
Technical field
The present invention relates to technical field of video processing, be specifically related to the Video coding display system of a kind of encoding video pictures and video display.
Background technology
Conventional video display belongs to the input-output equipment of computer, is a kind ofly certain e-file to be shown to show tools screen reflexing to again human eye by specific transmission equipment.
Video encoding techniques refer to adopt H.264 or H.263 coding standard to convert thereof into vision signal can in the digital signal of Internet Transmission, then in the technological package that receiving terminal is reduced to it by the mode of decoding.
Coding techniques is that vision signal can by the prerequisite of Internet Transmission and key.By to the compression of signal and coding, resolution is made to be that 1280 × 720 even the VGA signal of 1920 × 1080 can transmit on the network that bandwidth is less than 8M.The integrated embedded process chip of video encoder and programmable logic device, need an independent equipment settling signal source code function.
Traditional Digital Video System, first adopts signal distributor that access signal source is divided into two-way, and a road access display, realizes seat signal and show in real time.Another road access video encoder, is transmitted through the network to decoding end, is projected to Mosaic screen.Whole system takes up room, and also needing additionally increases by a road power supply.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention takes up room greatly for conventional digital video system, carries the deficiency of the problems such as inconvenience, provides a kind of Video coding display system.
In order to solve the problems of the technologies described above, the invention discloses a kind of Video coding display system, comprise image mainboard and power panel, image mainboard connects encoding board and display respectively;
Described image mainboard connects VGA input connector;
Described encoding board interconnection network out connector;
Described power panel is respectively image mainboard, encoding board and monitor power supply;
For a road video source being shown over the display by image mainboard, another road video source enters encoding board and converts the digital signal transmitted in network to.
In the present invention, described image mainboard comprises DVI distributor for receiving DVI signal, for the VGA distributor of outputting VGA signal and the resolution adaptive unit for exporting LVDS signal, DVI distributor is connected resolution adaptive unit with VGA distributor simultaneously, and described DVI distributor is connected to VGA distributor by a DVI-VGA transducer and VGA switch simultaneously; Described VGA switch is used for directly receiving the input of VGA signal simultaneously.
In the present invention, described encoding board comprises interconnective A/D converting unit and FPGA unit, and the flash cell connected successively, DSP signal processing unit, internal storage location and switch, and described FPGA unit is connected with DSP signal processing unit;
Analog video signal compressed encoding is converted to the digital signal transmitted in a network by encoding board, comprises the steps:
1) analog signal be converted to binary frame data and carry out inter prediction and infra-frame prediction;
2) frame data are carried out to the DCT integer transform of small size 4 × 4;
3) estimation is carried out, loop filtering and entropy code to the data after conversion.
In the present invention, have employed measured H.264/MPEG-4AVC coding techniques, coded treatment is carried out to rgb signal, by IP network, multimedia is transmitted, the card and the IP of compatible splicing controller decodes, realize streaming media signal in the large screen display of splicing.
In the present invention, support resolution 800 × 600,1024 × 768,1280 × 1024,1280 × 720,1400 × 1050,1920 × 1080, the vision signal of 1920 × 1200.
In the present invention, described encoding board adopts embedded processing chip and programmable logic device.
Incoming video signal source is divided into two-way by the present invention, and wherein a road access encoding board, converts the digital signal transmitted in a network to by analog signal.Drive plate of separately leading up to shows in LCD screen.Compared to existing technology, achieve and complete image display and Video coding in an equipment.
Accompanying drawing explanation
To do the present invention below in conjunction with the drawings and specific embodiments and further illustrate, above-mentioned and/or otherwise advantage of the present invention will become apparent.
Fig. 1 is inner connecting structure schematic diagram of the present invention;
Fig. 2 is graphics hardware mainboard schematic diagram of the present invention;
Fig. 3 is encoding board schematic diagram of the present invention;
Embodiment
As shown in Figure 1, the invention discloses a kind of Video coding display system, comprise image mainboard and power panel, image mainboard connects encoding board and display respectively;
Described image mainboard connects VGA input connector;
Described encoding board interconnection network out connector;
Described power panel is respectively image mainboard, encoding board and monitor power supply;
For a road video source being shown over the display by image mainboard, another road video source enters encoding board and converts the digital signal transmitted in network to.
In the present invention, analog video signal compressed encoding is converted to the digital signal transmitted in a network by encoding board, comprises the steps:
1) analog signal be converted to binary frame data and carry out inter prediction and infra-frame prediction;
2) frame data are carried out to the DCT integer transform of small size 4 × 4;
3) estimation is carried out, loop filtering and entropy code to the data after conversion.
In the present invention, have employed measured H.264/MPEG-4AVC coding techniques, coded treatment is carried out to rgb signal, by IP network, multimedia is transmitted, the card and the IP of compatible splicing controller decodes, realize streaming media signal in the large screen display of splicing.
In the present invention, support resolution 800 × 600,1024 × 768,1280 × 1024,1280 × 720,1400 × 1050,1920 × 1080, the vision signal of 1920 × 1200.
In the present invention, described encoding board adopts embedded processing chip and programmable logic device.
As shown in Figure 2, described image mainboard comprises DVI distributor for receiving DVI signal, for the VGA distributor of outputting VGA signal and the resolution adaptive unit for exporting LVDS signal, DVI distributor is connected resolution adaptive unit with VGA distributor simultaneously, and described DVI distributor is connected to VGA distributor by a DVI-VGA transducer and VGA switch simultaneously; Described VGA switch is used for directly receiving the input of VGA signal simultaneously.Image mainboard provides VGA and DVI two type signal to input.By distributor after the input of VGA signal, signal is divided into two-way, enters resolution adaptation module and loop output respectively.DVI input signal is divided into two paths of signals by distributor equally, leads up to DVI-VGA transducer, converts VGA signal loop to and exports.Another road enters resolution adaptation module.By resolution adaptation module, VGA or DVI signal and the Output Display Unit of input carry out the self adaptive regulating rotary of resolution and change LVDS signal into and be connected Output Display Unit.
As shown in Figure 3, described encoding board comprises interconnective A/D converting unit and FPGA unit, and the flash cell connected successively, DSP signal processing unit, internal storage location and switch, and described FPGA unit is connected with DSP signal processing unit; The VGA signal that image mainboard loop exports enters encoding board, first enters A/D modular converter, converts analog signal to digital signal.The digital picture of RGB24bit form is converted to DSP receptible BT1120 format-pattern by FPGA module.The effect of DSP module is that image compression is become H.264 form.Comprise seven steps: form binary frame data, form inter prediction, infra-frame prediction, the DCT integer transform of small size 4 × 4, multi-motion is estimated, loop filtering, entropy code.Finally convert network signal to be exported by RJ-45 network interface.
Embodiment
The present invention adopts a kind of video drive card (i.e. image mainboard) gone out from band, and carry out shunt to access signal source, signal is delivered in 19 cun of LCD screen and shown by LVDS connecting line of leading up to.Another road ring goes out signaling interface and connects encoding board.
Encoding board adopts video coding technique, adopts H.264 standard vision signal to be converted to the digital signal transmitted in a network.Coding module completes following seven steps: form binary frame data, form inter prediction, the DCT integer transform of infra-frame prediction, small size 4 × 4, multi-motion are estimated, loop filtering and entropy code.
Low-power consumption small dimension Video coding plate, adopts embedded processing chip and programmable logic device.Can be in the display integrated.
First vision signal enters the image mainboard of code indicator.Image mainboard built in video distributor, is divided into two-way by vision signal.One road signal is by the display frame on 19 cun of liquid crystal display screens of LVDS connecting line.Another road vision signal goes out passage by ring and enters Video coding plate, after compressed encoding, vision signal is converted to the digital signal that can transmit in a network.
Outside is inputted 220V alternating current by power panel, and to convert 12V direct current to be that image mainboard and encoding board are powered.
The invention provides a kind of Video coding display system; the method and access of this technical scheme of specific implementation is a lot; the above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.The all available prior art of each part not clear and definite in the present embodiment is realized.
Claims (6)
1. a Video coding display system, is characterized in that, comprises image mainboard and power panel, and image mainboard connects encoding board and display respectively;
Described image mainboard connects VGA input connector;
Described encoding board interconnection network out connector;
Described power panel is respectively image mainboard, encoding board and monitor power supply;
For a road video source being shown over the display by image mainboard, another road video source enters encoding board and converts the digital signal transmitted in network to.
2. a kind of Video coding display system according to claim 1, it is characterized in that, described image mainboard comprises DVI distributor for receiving DVI signal, for the VGA distributor of outputting VGA signal and the resolution adaptive unit for exporting LVDS signal, DVI distributor is connected resolution adaptive unit with VGA distributor simultaneously, and described DVI distributor is connected to VGA distributor by a DVI-VGA transducer and VGA switch simultaneously; Described VGA switch is used for directly receiving the input of VGA signal simultaneously.
3. a kind of Video coding display system according to claim 1, it is characterized in that, described encoding board comprises interconnective A/D converting unit and FPGA unit, and the flash cell connected successively, DSP signal processing unit, internal storage location and switch, described FPGA unit is connected with DSP signal processing unit;
Analog video signal compressed encoding is converted to the digital signal transmitted in a network by encoding board, comprises the steps:
1) analog signal be converted to binary frame data and carry out inter prediction and infra-frame prediction;
2) frame data are carried out to the DCT integer transform of small size 4 × 4;
3) estimation is carried out, loop filtering and entropy code to the data after conversion.
4. a kind of Video coding display system according to claim 3, it is characterized in that, have employed measured H.264/MPEG-4AVC coding techniques, coded treatment is carried out to rgb signal, by IP network, multimedia is transmitted, the card and the IP of compatible splicing controller decodes, realizes streaming media signal in the large screen display of splicing.
5. a kind of Video coding display system according to claim 4, is characterized in that, supports resolution 800 × 600,1024 × 768,1280 × 1024,1280 × 720,1400 × 1050,1920 × 1080, the vision signal of 1920 × 1200.
6. a kind of Video coding display system according to claim 5, is characterized in that, described encoding board adopts embedded processing chip and programmable logic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410655906.7A CN104378646A (en) | 2014-11-17 | 2014-11-17 | Video coding display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410655906.7A CN104378646A (en) | 2014-11-17 | 2014-11-17 | Video coding display system |
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| CN104378646A true CN104378646A (en) | 2015-02-25 |
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Application publication date: 20150225 |
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