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Black Box Explains... Digital Visual Interface (DVI)

DVI is the standard digital interface for PCs. The DVI standard is based on transition-minimized differential signaling (TMDS). DVI comes in two formats: single-link and dual-link. Single-link DVI has a maximum frequency of 165 MHz, and dual-link DVI, as one would expect, has double the maximum frequency. A single-link interface can transmit a resolution of 1920 x 1200 vs. 2560 x 1600 for dual link.

The most common DVI connectors are:
  • DVI-D: A digital-only connector for use between a digital video source and monitors. DVI-D eliminates the analog signals.
  • DVI-I (integrated): Supports both digital and analog RGB connections. It can transmit either a digital-to-digital signal or an analog-to-analog signal. It is used on products instead of separate analog and digital connectors.