Editing Digital Visual Interface (section)

===TMDS===
Digital video [[pixel]] data is transported using multiple TMDS [[twisted pair]]s. At the electrical level, these pairs are highly resistant to [[electrical noise]] and other forms of analog [[distortion]].

====Single link====
A ''single link'' DVI connection has four TMDS pairs. Three data pairs carry their designated 8-bit RGB component (red, green, or blue) of the video signal for a total of 24&nbsp;bits per [[pixel]]. The fourth pair carries the TMDS clock. The binary data is encoded using [[8b/10b encoding]]. DVI does not use [[packet (information technology)|packetization]], but rather transmits the pixel data as if it were a [[rasterized]] analog video signal. As such, the complete frame is ''drawn'' during each vertical refresh period. The full active area of each frame is always transmitted without compression. Video modes typically use horizontal and vertical refresh timings that are compatible with [[cathode-ray tube]] (CRT) displays, though this is not a requirement. In single link mode, the maximum TMDS clock frequency is 165&nbsp;MHz, which supports a maximum resolution of 2.75&nbsp;[[megapixels]] (including [[blanking interval]]) at 60&nbsp;Hz refresh. For practical purposes, this allows a maximum 16:10 screen resolution of 1920&nbsp;×&nbsp;1200 at 60&nbsp;Hz.

====Dual link====
To support higher-resolution display devices, the DVI specification contains a provision for ''dual link''. Dual link DVI doubles the number of TMDS data pairs, effectively doubling the video bandwidth, which allows higher resolutions up to 2560&nbsp;×&nbsp;1600 at 60&nbsp;Hz or higher refresh rates for lower resolutions.