Tuesday, May 3, 2011

DVI vs. HDMI

HDMI vs DVI, what's the difference? Which is better? DVI and HDMI are compatible? And of course, given the choice, what should you use? The differences (or lack of it) will surprise you. Let's look at each of them then evaluate the differences.

Digital Visual Interface (DVI) is a digital standard introduced in 1999 by the Digital Display Working Group (DDWG). It was designed mainly to carry uncompressed digital video data to a display. Originally theDisplay was a computer monitor but DVI is now generally considered good for television. One of the main areas of confusion with DVI is the number of different connections available, representing various functions. There are three connections for DVI, DVI-D (digital), DVI-A (analog) and DVI-I (digital and analog).

Hdmi

High-Definition Multimedia Interface (HDMI), was released in late 2002, is an all-digital audio / video, video transmissionsimilar to DVI Streams. However, HDMI also offers the possibility of audio signals, to pay not only video, as well as involvement HDCP, which is a digital rights management technology.

So what's the difference?
If we consider the differences between HDMI and DVI, we find that they actually shared the differences then. Both digital transmission, HDMI specifications were similar, as derived from the DVI specification. There aretwo important differences:
HDMI includes content protection called High Definition Content Protection (HDCP).
HDMI supports digital audio video. (DVI only supports digital video)

DVI and HDMI are compatible?
HDMI is compatible with DVI? As the predecessor to HDMI / DVI, HDMI and DVI are identical as regards the video goes. Therefore, there is video compatibility. However, DVI does not support digital audio. For example, if you have an older DVIConnection to the source and an HDMI port on the display is a DVI-HDMI cable all you need to watch this video. A separate audio cable (TOSLINK or SPDIF) are needed, which will bring digital audio.

A warning of cable length
The HDMI specification does not define the maximum length of cable. HDMI 1.3 defines two types of cables: Category 1 (standard or HDTV) and Category 2 (High-Speed ​​or greater than HDTV) is an independent, not HDMI or DVI to work beyondDistances of over 15 meters. If you need a cable longer than 10 meters is to be guaranteed in any case, high quality cables. For those who have more than 15 feet, some companies amplifiers, equalizers and repeaters that can help bridge the longest distance.

What should I use today?
If available, we recommend HDMI. This is not because it's better then DVI, only because the industry is pushing strongly for the HDMI HDCP digital rights management. However,You should not expect any difference when you switch from DVI-HDMI, DVI, if you stay on, the process of each spin to have the next standard. A bit 'off topic, but important is that you will be able to provide a similar quality video by pressing to get your existing connections components. A common misconception is that the components can not carry HDTV-quality video that is wrong. Depending on the components of the system can achieve the same performance or better with a componentThen connect to an HDMI or DVI.

DVI vs. HDMI

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