Black Box Explains...Digital Visual Interface (DVI) cables. The
Digital Visual Interface (DVI) standard is based on transition-
minimized differential signaling (TMDS). In a typical single-
line digital signal, voltage is raised to a high level and
decreased to a... more/see it nowlow level to create transitions
that convey data. To minimize the number of transitions needed
to transfer data, TMDS uses a pair of signal wires. When one
wire goes to a high-voltage state, the other goes to a low-
voltage state. This balance increases the data-transfer rate and
improves accuracy. There are different types of DVI connectors:
DVI-D, DVI-I, DVI-A, DFP, and EVC. DVI-D is a digital-only
connector. DVI-D is a digital-only connector. DVI-I supports
both digital and analog RGB connections. Some manufacturers are
offering the DVI-I connector type on their products instead of
separate analog and digital connectors. DVI-A is used to carry
an analog DVI signal to a VGA device, such as a display. DFP,
like DVI-D, was an early dig