Monday, March 25, 2013

Understanding the DVI Standard - DVI Cables Explained

Digital Video Interface or DVI cables are being used to provide faster, exceptional-quality images, far better than their analog counterpart. That is the reason why DVI cables are now becoming popular with video card manufacturers and it is for these reasons that both VGA and DVI ports are being offered on most video cards. DVI is the only prevalent video standard that comprises an analog and digital transmission alternative in the same connector.

A digital protocol is used by the DVI interface that provides a desired illumination of pixels which is subsequently transmitted as binary data. As soon as the display is coercing at its innate resolution, it will interpret each number and utilize that brightness to the correct pixel. Through this procedure, every pixel in the output buffer of the source device match directly to one pixel in the display device, while with an analog signal the manifestation of every pixel may possibly be affected by its contiguous pixels as well as by electrical noise and other kind of analog distortion.

Apart from being used as a standard computer interface, the DVI standard was also partially introduced in Plasma Display, HDTV, DVDs, movies etc. More over a number of DVD players top-end models also contain the DVI output feature, apart from the good-quality analog component video. There are four types of DVI connections available viz. DVI-Digital, DVI-Analog, DVI-Integrated (Digital & Analog) and M1-DA (digital, analog & USB). DVI cables (digital) use direct connections between video cards and LCD monitors. While DVI cables (analog) transmit a DVI signal for analog display in CRT monitors or older modeled LCDs. But it should be remembered that there is quality loss when converting digital to analog; that is the reason why digital signal is recommended at this juncture.

DVI Cables (Integrated) are able to transmit signal from digital-to-digital or an analog-to-analog. This helps the DVI cable to be used either in a digital or analog situation. This also insures similar to any other format DVI cables (digital) and analog cannot be interchanged. For example, a DVI (digital) cable will unable to work on an analog system and vice versa. If you intend to connect an analog source to digital, you will have to acquire a VGA to DVI-D electronic converter; likewise for connecting a digital output to an analog monitor, there will be a requirement of DVI cable (digital) to VGA converter.

Buying Tips for DVI Cables []:
• First of all decide which type of DVI cable will be essential for your products, check the female DVI signals to know their compatibility.
• Remember if one or both connections are DVI-D, a DVI-D cable will be required, if both cables belong to DVI-A, then DVI-A cable will be necessary.
• If lone connection relates to DVI and the other belongs to VGA, and the DVI is an analog compatible, you will need a DVI to VGA cable.
• If both connections relates to DVI-I, you are at liberty to use any of the DVI cable available, but DVI-I cable will be more appropriate.

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