DVI (Digital Visual Interface) For Digital Quality Output

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Although the term DVI (Digital Visual Interface) may seem a mouthful, it is basically a standard set for visual interfaces. Manufacturers of display devices and products, designers of applications which rely on good visual output as well as the general consumer market refer to this standard as common ground. In moving out from the days of the analog legacy into the digital experience, a consortium of relevant industries was formed to spearhead these objectives. The drive to deliver the ultimate in home entertainment, movies and gaming experiences is more than enough reason to seek out the best that DVI technology can offer. Although DVI was initially involved in the high definition television industry, its main focus is now more towards the computer market.

As DVI refers to an interface, it is essentially a connection from a source component such as a DVI-equipped video graphic card, DVD player, cable or satellite set-top box with DVI features, to a video display device such as a LCD panel or high definition display unit. Ideally the digital video signal is to be directly transferred via DVI connectors to result in displays of good quality and high clarity. Any conversion to analog signals during the transfer will cause a drop in display quality.

There are namely three types of DVI (Digital Visual Interface) formats with related connectors. Firstly, it’s noteworthy to identify whether your devices are equipped with DVI features. Let’s say you want to connect your computer to your LCD monitor. Assuming both are DVI-ready, you’ll need to use a DVI-Digital cable for direct connection. This enables high speed transmission of digital data from source to display. Since the data is not converted from digital to analog, the result is high quality display. As the data is uncompressed, this type of cable is also able to support a large quantity of data transfer.

Assuming you have DVI at either the source or display, you’ll then need a DVI-Analog cable to connect your DVI computer to a LCD monitor which can only support VGA. Since there is a need to convert the digital video signal to analog, some loss in display quality is inevitable. An optimal choice in cable selection is the DVI-Integrated cable which supports the signal transmissions of digital-to-digital as well as analog-to-analog. Hence, its versatility allows it to be used in most, if not all, situations.

Since DVI is all about signal transmission, signal strength is normally constrained by cable length. Although manufacturers are producing video cards which can send out stronger signals, degradation in transmissions can’t be avoided as the signals travel the cable distance. To overcome this dilemma, DVI signal boosters are placed at specific distance intervals.

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