DVI or HDMI?

[Bheng]

What's the difference and which one is better? Thanks!

[mrmoo]

HDMI carries sound and uses HDCP encryption. Apart from that there is no difference between DVI-D (digital) and HDMI apart from the connectors used. DVI can also be used for analogue signals, called DVI-A. DVI-I is A+D typically output from computer graphics cards.

[LV426]

This is more like a general HDTV question, rather than DLP so, moving.......

[ianh64]

Originally Posted by mrmoo

HDMI carries sound and uses HDCP encryption. Apart from that there is no difference between DVI-D (digital) and HDMI apart from the connectors used. DVI can also be used for analogue signals, called DVI-A. DVI-I is A+D typically output from computer graphics cards.

HDMI is quite different from DVI-D. HDMI is very much a video orientated superset of DVI-D. DVI-D was primarily for PC use so it is 8 bit RGB, 0 = black level, 255-white level. Video is quite different from PC and there are video based signalling over DVI 8 bit RGB, but 16=video level black and 235=video level white. You need to respect this difference if connecting HDMI or DVI-video signals and DVI-PC signals. HDMI takes this much further, with proper video standards such as YCBCR 4:4:4, YCBCR 4:2:2 and RGB 4:4:4 (DVI-video) with YUV available at 8, 10 and 12 bit resolution. HDMI also carries 2 way control information between devices so one device can be controlled by another and the certification process should help ensure that interoperability between products is more trouble free.

IMO, this is not 'no difference'.

-Ian