Optoma HD20 High Definition 1080p DLP Home Theater Projector (Grey)

Optoma HD20 High Definition 1080p DLP Home Theater Projector (Grey)

Optoma HD20 High Definition 1080p DLP Home Theater Projector (Grey)
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Sunday, July 8, 2012

HDMI vs DVI

HDMI vs DVI


HDMI vs DVI, what is the difference? Which one is better? DVI and HDMI Are compatible? And of course, given the choice, which one should you use? The differences (or lack there of) may surprise you. Lets take a look at each of them then evaluate the differences.

HDMI vs DVI

HDMI vs DVI

HDMI vs DVI


HDMI vs DVI



HDMI vs DVI

Digital Visual Interface (DVI) is a digital standard introduced in 1999 by the Digital Display Working Group (DDWG). It is designed primarily for carrying uncompressed digital video data to a display. Originally the display was a computer monitor DVI but is now commonly used for television as well. One of the main areas of confusion with DVI is the number of different connectors available, which represent different functionality. There are three main connection types for DVI, DVI-D (digitalonly), DVI-A (analog) and DVI-I (digital & analog).

High-Definition Multimedia Interface (HDMI), released late in 2002, is an all-digital audio/video interface capable of transmitting uncompressed streams of data similar to DVI. However HDMI also provides the ability to carry audio signals, in addition to video, as well as incorporating HDCP, which is a Digital Rights Management technology.

So what is the difference?
When looking at the differences between HDMI and DVI we find they actually have more in common then differences. They both support digital transmission; they also are based on similar specifications since HDMI was derived from the DVI specification. There are two big differences:
HDMI incorporatescontent protection called High Definition Content Protection (HDCP).
HDMI supports audio in addition to digital video. (DVI only supports digital video)

DVI and HDMI Are compatible?
HDMI Is compatible with DVI? Since DVI is the predecessor to HDMI, HDMI and DVI are identical as far as video is concerned. Therefore, video backward compatibility exists. However, DVI will not support digital audio. For example, if you have an older DVI connection on your source and a HDMI connector on your display, a HDMI to DVI cable is all that is needed in order to view the video. A separate audio cable (SPDIF or TOSLINK) will be needed to carry the digital audio.

HDMI vs DVI