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DVI光纤的基本是什么呢?

date:On December 15, 2017 Source:  

   DVI光纤传输方案的其中一种,其中该方案具有特殊的性质那么DVI光纤的基本是什么呢,那也是DVI信号的DVI信号在传输过程中有其特殊性,即由于数据码流过快,使得传输距离有限,以1600×1200×60为例,按规定,可传输5米,在目前的实际应用中,可完成7米左右,以1280×1024×70为例,传输10米是可行的。

DVI optical fiber transmission scheme in which the program has a special nature then what is the basic DVI fiber it, which is the DVI signal DVI signal has its particularity in the transmission process, that is because the data code flow too fast, making Transmission distance is limited to 1600 × 1200 × 60, for example, according to the provisions of 5 meters can be transmitted in the current practical application, can be completed about 7 meters to 1280 × 1024 × 70, for example, the transmission of 10 meters is feasible.

DVI信号

   当然要选用较好的电缆,1024×768×75能传到13—14米。在单级传输的情况下,首要问题是驱动能力的问题,即解决“走不动了”的问题,但同时,即便是数字信号,长距离传输也还存在着信号波形变形失真的问题,即通过增加驱动能力经过传输后,信号的波形出现较大失真,收端收到的信号在“0”和“1”的判别上出现错误,从显示上看,出现了“错点”,“错点”太多时显示会失败,即不再显示。实际上,DVI信号长距离传输时,随着距离的增加,在显示上可观察到的情况是:良好→有错点→较多错点→失败。失败可能是信号“走不动了”,到达不了显示器,也可能是“走得动”,但“错点”太多而失败。

Of course, to choose a better cable, 1024 × 768 × 75 can reach 13-14 meters. In the case of single-stage transmission, the primary problem is the problem of driving ability, that is, the problem of "walking alone", but at the same time, there is still a problem of distorted signal waveform distortion even over digital signals over long distances After the transmission capacity is increased, the waveform of the signal is greatly distorted. The received signal at the receiving end shows an error on the judgment of "0" and "1". From the display point of view, there is a "wrong point" When the dot is too large, the display will fail, that is no longer displayed. In fact, when the DVI signal is transmitted over long distances, as the distance increases, what is observable on the display is: Good → False → More False → Fail Fail The signal may be "walking indefinitely" Can not display, it may be "go move", but "wrong point" too many failed.


   通过光模块及光纤进行发送和接收,实现对DVI高清多媒体信号的远距离传输,通过不同传输距离的光模块,实现最远可达60KM的远距离传输,此产品是一款无损失、无延时传输,适用于高清远距离传输的各种要求。

Through the optical module and optical fiber to send and receive, to achieve the DVI high-definition multimedia signal transmission over long distances, through different optical modules distance to achieve the farthest up to 60KM long-distance transmission, this product is a no loss, no delay When the transmission, for long-distance transmission of high-definition requirements.


   DVI信号的原理,是将显卡中经过处理的待显示R.G.B数字信号与H.V信号进行组合,按最小非归零编码,将每个像素点按10hit的数字信号进行并→串转换,把编码后的R.G..B数字流与像素时钟等4组信号按照T.M.D.S.方式进行传输,其每路码流速率为原像素点时钟的10倍,以1024×768×70的分辨率为例,像素时钟为75MHZ,码流时钟为75MHz×10,为0.75GHZ。一般DVI的码流在0.24GHZ到1.65GHZ之间。

DVI signal principle is to be processed in the graphics card to be displayed RGB digital signal and the HV signal combination, according to the minimum non-return-to-zero coding, each pixel click 10hit digital signal and → serial conversion, the encoded RG.B digital stream and pixel clock signal transmission in accordance with the TMDS TMDS mode, each stream rate of 10 times the original pixel clock to 1024 × 768 × 70 resolution, for example, the pixel clock is 75MHZ, The code stream clock is × 10 of 75MHz, it is 0.75GHZ. The general DVI code stream between 0.24GHZ to 1.65GHZ.


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