CN102523438A - Fiber-transmission digital visual interface (DVI) - Google Patents
Fiber-transmission digital visual interface (DVI) Download PDFInfo
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- CN102523438A CN102523438A CN2011104280667A CN201110428066A CN102523438A CN 102523438 A CN102523438 A CN 102523438A CN 2011104280667 A CN2011104280667 A CN 2011104280667A CN 201110428066 A CN201110428066 A CN 201110428066A CN 102523438 A CN102523438 A CN 102523438A
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Abstract
The invention relates to a high definition video transmission device and especially relates to a fiber-transmission digital visual interface (DVI). The fiber-transmission DVI of the invention comprises: an input DVI module which can be connected with a DVI data source and an output DVI module which can be connected with digital video equipment. The input DVI module accesses one photoelectric conversion transmitter which can convert an electric signal into a light signal. The photoelectric conversion transmitter is connected with an electro-optic conversion receiver which can convert the light signal into the electric signal through a section of fiber. The signal of the electro-optic conversion receiver is output to the output DVI module. According to the invention, through the fiber, the DVI input and output signals are transmitted. A signal transmission distance can be substantially increased. The effective transmission distance can reach 500 meters. An error rate is low. Problems, such as data safety, magnetic interference resistance and the like, can be effectively solved.
Description
Technical field
The present invention relates to the HD video transmission apparatus, be specifically related to a kind of Optical Fiber Transmission digital visual interface.
Background technology
All be to be connected between most computers and the external display device at present through simulation VGA interface; The displays image information that computer-internal generates with digital form; Changed into R, G, B tricolor signal and row, field sync signal by the D/A in the video card (digital-to-analog) transducer, signal passes through cable transmission in display device.For analog display device, like the simulation CRT monitor, signal is directly delivered to corresponding treatment circuit, and the drive controlling picture tube generates image.And, need configuration corresponding A/D (analog/digital) transducer in the display device for numerical display devices such as LCD, DLP, be digital signal with analog-signal transitions.After through D/A and A/D2 conversion, caused the loss of some image details inevitably.
The DVI full name is Digital Visual Interface, i.e. digital visual interface.On LCD, use the DVI interface, with the obvious advantage than with traditional analog VGA interface.The DVI standard is formally released in April, 1994 by DDWG, and its basis is the Panel Link interfacing of Silicon Image company.The physics mode of docking port, electric pointer, clock mode, coded system, transmission means, data formats etc. have carried out strict definition and standard in the DVI standard.For numerical display device,, avoided losing of image detail, thereby guaranteed the complete reproduction of computer generated image owing to do not have D/A and A/D transfer process.In dvi standard, also increase a hot plug monitor signal, thereby really realized plug and play.What DVI transmitted is digital signal, and digital image information need not pass through any conversion, will directly be sent on the display device; Therefore reduced the loaded down with trivial details transfer process of numeral → simulation → numeral, saved the time greatly, so its speed has been faster; Effectively eliminate the smear phenomenon, and use DVI to carry out transfer of data, signal is decay not; Color is purer, and is more true to nature.
But under present technical conditions, DVI also has a very big shortcoming, is exactly that transmission range is short.Under the common situation, general DVI cable can only effectively transmitted signal about 5 meters, the decay that will produce signal above 5 meters.This shortcoming has greatly limited popularizing and using of DVI equipment.
Summary of the invention
Technical problem to be solved by this invention is that the Optical Fiber Transmission that a kind of transmission range is long, transmission speed is fast, transmission precision is high digital visual interface is provided.
Optical Fiber Transmission digital visual interface of the present invention includes input DVI module that can be connected with the DVI data source and the output DVI module that can be connected with digital-video equipment; It can be the opto-electronic conversion transmitter of light signal with electrical signal conversion that said input DVI module inserts one; The opto-electronic conversion transmitter can be connected the electric light conversion receiver that light signal converts the signal of telecommunication into one through one section optical fiber, and the signal of said electric light conversion receiver outputs to exports the DVI module.
The present invention transmits DVI input, output signal through optical fiber, has improved signal transmission distance greatly, and effective propagation path can reach 500 meters, and the error rate is low, efficiently solves problems such as data security, diamagnetic interference.
Description of drawings
Fig. 1 is a schematic diagram of the present invention;
Fig. 2 is the circuit diagram of the opto-electronic conversion transmitter of the embodiment of the invention.
Embodiment
As shown in Figure 1; This Optical Fiber Transmission digital visual interface includes input DVI module that can be connected with the DVI data source and the output DVI module that can be connected with digital-video equipment; It can be the opto-electronic conversion transmitter of light signal with electrical signal conversion that input DVI module inserts one; The opto-electronic conversion transmitter can be connected the electric light conversion receiver that light signal converts the signal of telecommunication into one through one section optical fiber, and the signal of said electric light conversion receiver outputs to exports the DVI module.In its course of work; The red, green, blue color data that the figure image source generates is by importing the DVI module according to TMDS protocol code parallel seriesization; Behind the opto-electronic conversion transmitter, send to electric light conversion receiver through optical fiber, give digital-video equipment through the decoding back by output DVI module.
In the embodiment of the invention, can adopt four MAX3740 chip drives lasers to carry out four tunnel video Data Transmission in the opto-electronic conversion transmitter circuit.As shown in Figure 2, MAX3740 is the high speed VCSEL driver that has DM that U.S. MAXIM company produces, and it includes bias generator and laser modulator.Can be used for little profile (SFF) and little profile and can plug (SFP) optical fiber lan transmitter; Operating rate is up to 3.2Gbs; Can effectively support to be lower than WUXGA (1920 * 1200 60Hz) arbitrary resolution, but 15mA Laser Modulation electric current and 15mA bias current also can provide adjustable temperature-compensating; Thereby make extinction ratio compliant requirement in whole temperature range; Changing at temperature and laser characteristic makes, and its automatic control function of power scalable laser bias current is to guarantee constant average light power, to reduce transmission error code.
In the embodiment of the invention, electric light conversion receiver can adopt the MAX3747 chip, and its parameter characteristic is: but 1 155Mbps operates to 3.2Gbps; 2,>57dB gain; 3, < 10-12BER and 2mVP-P input range; 4,18mA source current; 5, output prohibiting function; 6, the compatible input of PECL level.
Claims (3)
1. Optical Fiber Transmission digital visual interface; Include input DVI module that can be connected and the output DVI module that can be connected with digital-video equipment with the DVI data source; It is characterized in that: it can be the opto-electronic conversion transmitter of light signal with electrical signal conversion that said input DVI module inserts one; The opto-electronic conversion transmitter can be connected the electric light conversion receiver that light signal converts the signal of telecommunication into one through one section optical fiber, and the signal of said electric light conversion receiver outputs to exports the DVI module.
2. Optical Fiber Transmission digital visual interface according to claim 1 is characterized in that: include the MAX3740 chip in the said opto-electronic conversion transmitter circuit.
3. Optical Fiber Transmission digital visual interface according to claim 1 is characterized in that: include the MAX3747 chip in the said opto-electronic conversion transmitter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011104280667A CN102523438A (en) | 2011-12-20 | 2011-12-20 | Fiber-transmission digital visual interface (DVI) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104280667A CN102523438A (en) | 2011-12-20 | 2011-12-20 | Fiber-transmission digital visual interface (DVI) |
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| CN102523438A true CN102523438A (en) | 2012-06-27 |
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| CN2011104280667A Pending CN102523438A (en) | 2011-12-20 | 2011-12-20 | Fiber-transmission digital visual interface (DVI) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811345A (en) * | 2012-08-10 | 2012-12-05 | 江苏奥雷光电有限公司 | Digital interface terminal |
| CN105049797A (en) * | 2015-07-09 | 2015-11-11 | 山东超越数控电子有限公司 | Video signal remote transmission realizing method |
| CN110572625A (en) * | 2019-03-12 | 2019-12-13 | 飞昂创新科技南通有限公司 | Optical data interconnect system |
| CN112995611A (en) * | 2021-04-27 | 2021-06-18 | 武汉联胜光电技术有限公司 | Lossless image acquisition and transmission method, device and system |
| CN113300172A (en) * | 2021-04-13 | 2021-08-24 | 深圳市倍思科技有限公司 | Multi-audio-video output interface charger and control method thereof |
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| CN2899341Y (en) * | 2006-01-11 | 2007-05-09 | 北京宽博基业电子有限公司 | DVI digital video optical-fiber receiver-transmitter converter |
| CN101278505A (en) * | 2005-08-30 | 2008-10-01 | 菲尼萨公司 | Optical networks for consumer electronics |
| CN201219291Y (en) * | 2008-06-27 | 2009-04-08 | 广东威创视讯科技股份有限公司 | Distant-range camera monitoring apparatus |
| CN101931466A (en) * | 2009-06-22 | 2010-12-29 | 钱国涛 | Method for extending HDMI or DVI interface connection at ultra-long distance by using five optical fibers |
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2011
- 2011-12-20 CN CN2011104280667A patent/CN102523438A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101278505A (en) * | 2005-08-30 | 2008-10-01 | 菲尼萨公司 | Optical networks for consumer electronics |
| CN2899341Y (en) * | 2006-01-11 | 2007-05-09 | 北京宽博基业电子有限公司 | DVI digital video optical-fiber receiver-transmitter converter |
| CN201219291Y (en) * | 2008-06-27 | 2009-04-08 | 广东威创视讯科技股份有限公司 | Distant-range camera monitoring apparatus |
| CN101931466A (en) * | 2009-06-22 | 2010-12-29 | 钱国涛 | Method for extending HDMI or DVI interface connection at ultra-long distance by using five optical fibers |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811345A (en) * | 2012-08-10 | 2012-12-05 | 江苏奥雷光电有限公司 | Digital interface terminal |
| CN105049797A (en) * | 2015-07-09 | 2015-11-11 | 山东超越数控电子有限公司 | Video signal remote transmission realizing method |
| CN110572625A (en) * | 2019-03-12 | 2019-12-13 | 飞昂创新科技南通有限公司 | Optical data interconnect system |
| CN113300172A (en) * | 2021-04-13 | 2021-08-24 | 深圳市倍思科技有限公司 | Multi-audio-video output interface charger and control method thereof |
| CN112995611A (en) * | 2021-04-27 | 2021-06-18 | 武汉联胜光电技术有限公司 | Lossless image acquisition and transmission method, device and system |
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Application publication date: 20120627 |