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数字化技术接口类型的解析

date:On November 15, 2017 Source:  

   现在的数码科技时代都是数据传输未标准的说法,常见的接口HDMI、DVI、DP这三种类型,由于每个类型接口的常用都是不一样的,所以在分类上就出现了各种不同的叫法,今天利诺威HDMI光纤厂家为大家讲述一下这三种类型的接口。

Nowadays, the era of digital technology is not standardized data transmission, the common interface HDMI, DVI, DP these three types, as each type of interface commonly used are not the same, so the classification appeared on the various The name is today, Lenovi HDMI optical fiber manufacturers to tell you about these three types of interfaces.

HDMI_DVI_DP接口

   HDMI的英文全称是“HighDefinitionMultimediaInterface”,中文的意思是高清晰度多媒体接口。HDMI接口可以提供高达5Gbps的数据传输带宽,可以传送无压缩的音频信号及高分辨率视频信号。同时无需在信号传送前进行数/模或者模/数转换,可以保证最高质量的影音信号传送。应用HDMI的好处是,只需要一条HDMI线,便可以同时传送影音信号,而不像现在需要多条线材来连接。同时,由于无需进行数/模或者模/数转换,能取得更高的音频和视频传输质量。

HDMI full name is "HighDefinitionMultimediaInterface", Chinese means high definition multimedia interface.HDMI interface can provide up to 5Gbps data transmission bandwidth, can send uncompressed audio signal and high resolution video signal. At the same time without the need to carry out digital / analog or digital / digital conversion before the signal transmission, you can ensure the highest quality audio and video signal transmission. The advantage of using HDMI is that only one HDMI cable is needed to transmit video signals at the same time, unlike the current need for multiple wires to connect. At the same time, higher audio and video transmission quality can be achieved by eliminating the need for D / A or A / D conversions.


   DVI(DigitalVideoInterface),即数字视频接口。是基于TMDS(TransitionMinimizedDifferentialSignaling),转换最小差分信号)技术来传输数字信号,TMDS运用先进的编码算法把8bit数据(R、G、B中的每路基色信号)通过最小转换编码为10bit数据(包含行场同步信息、时钟信息、数据DE、纠错等),经过DC平衡后,采用差分信号传输数据,它和LVDS、TTL相比有较好的电磁兼容性能,可以用低成本的专用电缆实现长距离、高质量的数字信号传输。数字视频接口(DVI)是一种国际开放的接口标准,在PC、DVD、高清晰电视(HDTV)、高清晰投影仪等设备上有广泛的应用。

DVI (DigitalVideoInterface), that is, digital video interface. Is based on TMDS (TransitionMinimized Differentiated Signaling), to convert the minimum differential signal) technology to transmit digital signals, TMDS advanced encoding algorithm to 8 bits of data (R, G, B of each primary color signal) through the minimum conversion encoding 10-bit data Including line field synchronization information, clock information, data DE, error correction, etc.), after the DC balance, the use of differential signal transmission data, which has better electromagnetic compatibility than LVDS, TTL, you can use low-cost special cable Achieve long-distance, high-quality digital signal transmission. Digital Video Interface (DVI) is an internationally accepted interface standard that is widely used on PCs, DVDs, HDTVs and HDTV projectors.


   DP接口即DisplayPort接口,DisplayPort是由视频电子标准协会(VESA)发布的显示接口。作为DVI的继任者,DisplayPort将在传输视频信号的同时加入对高清音频信号传输的支持,同时支持更高的分辨率和刷新率。它能够支持单通道、单向、四线路连接,数据传输率10.8Gbps,足以传送未经压缩的视频和相关音频,同时还支持1Mbps的双向辅助通道,供设备控制之用,此外还支持8位和10位颜色。在数据传输上,DisplayPort使用了“micro-packetised”格式。VESA还表示,DisplayPort具备高度的可扩展性,可以在今后不断加入更多新内容。

DP interface DisplayPort interface, DisplayPort by the Video Electronics Standards Association (VESA) released display interface. As a successor to DVI, DisplayPort will add support for HD audio signal transmission while transmitting video signals, while supporting higher resolutions and refresh rates. It can support single channel, one-way, four-wire connection, data transfer rate of 10.8Gbps, enough to send uncompressed video and related audio, but also supports 1Mbps bi-directional auxiliary channel for device control purposes, in addition to supporting 8 And 10 colors. DisplayPort uses the "micro-packetised" format for data transfer. VESA also said that DisplayPort is highly scalable so it can add more new content in the future.


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