Like any major new technology, high definition is a highly competitive market. Many standards and technologies are introduced, and while some end up in an endless battle for dominance, others are simply rendered obsolete. One example of the latter is DVI, or Digital Video Interface. DVI was one of the first contenders to enter the realm of transferring high definition video signals between devices. This was vital to the growing world of HD, as needless to say, a signal without a connection and cable to transfer it is all but worthless.
The advantages of high bandwidth digital standards like DVI is primarily that it allows the transfer of uncompressed digital video signals. This means that there’s no loss of picture quality as a video signal makes it way from the source to the destination, meaning a perfect picture. While the video signal still needs to be uncompressed when it reaches the television itself, it overall provides a much crisper picture, and that’s what sets high definition TV apart.
There are three types of DVI. DVI-D are true digital video connectors. They are used to transfer video data from a source to its destination, usually a digital LCD computer monitor. Due to the very nature of digital connection, this provides a high quality image than standard, analog connections. This is because normally, the digital signal produced at the source must be converted to analog, causing a loss of quality. DVI circumvents this need, maintaining maximal quality.
DVI-A is used to carry a DVI signal to an analog receptor, such as a standard CRT monitor. This type of connector will cause some quality loss due to the nature of digital to analog conversion. The DVI-I is in integrated solution that can perform either digital to digital or digital to analog transmissions.
DVI as it stands today is becoming relegated primarily to the PC market. HDMI, or High Definition Multimedia Interface, is becoming the standard for high definition and plasma TVs. HDMI brings not only additional bandwidth, but also the ability to transfer both audio and video signals simultaneously. These advantages have edged DVI mostly out of the home theater market. However, if you own devices with DVI inputs or outputs, HDMI is mostly compatible. With the use of simple converters, you can use HDMI-only devices with your DVI devices without any loss of quality.
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