DVI (Digital Visual Interface), or Digital Video Interface. It is 1999 by Silicon Image, Intel (Intel), Compaq (Compaq), IBM, HP (Hewlett-Packard), NEC, Fujitsu (Fujitsu) and other companies *** with the composition of the DDWG (Digital Display Working Group, the Digital Display Working Group) to launch the interface standard.
The DVI interface is based on Silicon Image's PanalLink interface technology and is based on the TMDS (Transition Minimized Differential Signaling) electronic protocol as the basic electrical connection. TMDS is a differential signaling mechanism that encodes the pixel data and allows the pixel data to be encoded. TMDS is a differential signaling mechanism that allows pixel data to be encoded and transmitted over a serial connection. The digital signal generated by the graphics card is encoded by the transmitter according to the TMDS protocol and sent through the TMDS channel to the receiver, where it is decoded and sent to the digital display device.
A DVI display system consists of a transmitter and a receiver. The transmitter is the source of the signal, which can be built into the graphics card chip or in the form of an add-on chip on the graphics card PCB; while the receiver is a piece of circuitry on the display that accepts the digital signal, decodes it and passes it on to the digital display circuitry, through which the signal from the graphics card becomes the image on the display.
VGA vs. DVI: In practical terms, VGA colors will be more vibrant, while DVI brightness and contrast will be higher, in general, each has its own strengths.