![]() The timing of the signal almost exactly matches that of an analog video signal. A single DVI link consists of four twisted pairs of wires (red, green, blue, and clock) to transmit 24 bits per pixel. ![]() This uses transition minimized differential signaling (TMDS). The data format used by DVI is based on the PanelLink serial format devised by the semiconductor manufacturer Silicon Image Inc. If a PC's DVI output does not provide audio, it can be patched in as part of the DVI to HDMI adapter. The main difference is that DVI typically carries no audio data in its TMDS channel, although increasingly, modern PC video hardware is providing audio (e.g., cards by NVIDIA and ATI), allowing the PC to send audiovisual data to a high definition television with an HDMI input. In this way, each pixel in the output buffer of the source device corresponds directly to one pixel in the display device, whereas with an analog signal the appearance of each pixel may be affected by its adjacent pixels as well as by electrical noise and other forms of analog distortion.ĭVI is mostly compatible with HDMI. ![]() When the display is driven at its native resolution, it will read each number and apply that brightness to the appropriate pixel. The DVI interface uses a digital protocol in which the desired illumination of pixels is transmitted as binary data. ![]() It is partially compatible with the High-Definition Multimedia Interface (HDMI) standard in digital mode (DVI-D), and VGA in analog mode (DVI-A). It is designed for carrying uncompressed digital video data to a display. It was developed by an industry consortium, the Digital Display Working Group (DDWG) to replace the "legacy analog technology" VGA connector standard. The Digital Visual Interface ( DVI) is a video interface standard designed to provide very high visual quality on digital display devices such as flat panel LCD computer displays and digital projectors.
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