Comment Re:Business use laptops and projectors (Score 5, Interesting) 704
There is little support for HDMI within the seminar room equipment available, it's practically all VGA only. It's only very high end kit which has HDMI support.
If you add to that most, if not all, "presenter" units (that is the back-lit camera systems people can use to show objects or hand-written notes) are VGA output only, the only real solution is analogue video, even though it doesn't travel long distances well (though this can be worked around with video senders).
The reason I know this is that only a couple of years ago I was on a committee running the kitting out of some lecture theatres and seminar rooms. None of the tendering A/V companies could supply a complete system using DVI, HDMI or any other digital video technology even though we asked them to look into it.
VGA is *THE* de-facto lowest common denominator computer video format, it's likely to stay that way for a *VERY* long time.