On Tuesday 02 Mar 2010, HB-GRAL wrote:
> Melchior FRANZ schrieb:
> > * HB-GRAL -- Tuesday 02 March 2010:
> >> Melchior FRANZ schrieb:
> >>> Helvetica is the default font used in HUDs (e.g. in the F16).
> >>> While not perfect for that (there are MIL standards for
> >>> this),
> >>
> >> Do you mean in real HUDs?
> >
> > Real HUDs use a MIL standard font. Ours use Helvetica. I even
> > tuned that for the use in HUDs, as the prior version didn't
> > look good in tapes. I don't say that yours is worse, just that
> > it can't be swapped without checking. And a MIL spec compliant
> > font should be the ultimate goal, anyway.
>
> Yes, I see that I misunderstood your comment about f-16.
>
> As I started to work for a 'all-in-one FG-Font' I had the HUD in
> mind and also signage because the original and OFL-Allerta is
> exactly for this purpose (there are some equal requirements for
> fonts in a display and for signage I think). Now the real
> standard numbers like yours(?) in the sign textures are miles
> better then anywhere and this standard is also used in some real
> HUDs. I think now it is better to separate all this things and
> not to work for a 'all-in-one'.
>
> Thanks- Yves

Does anyone know if raster displays are used in modern HUDs?  The 
early first generation huds were all vector displays, of course, 
but Wikipedia says that second generation HUDs use an LCD screen to 
modulate the light from an LED.  However, it's still not clear to 
me whether this counts as a raster display (although it does 
suggest a raster mask).

That all the HUD images I've ever seen, including modern ones, are 
still monochrome suggests that they're still essentially vector 
displays, for if the imagery is produced using an LCD then I'd 
expect to see different colours on the HUD, instead of the 
ubiquitous green (although red/orange has been used on some 
automobiles).

If anyone can find some high-res pictures of _real_ HUD displays 
(and not ones from flight sims, as they're obviously going to be 
produced via a raster display) it should be possible to see the 
LCD 'dots' (unless they LCD screen uses a ridiculously high 
resolution, which doesn't really chime with the requirements for 
size and ruggedisation).

Anyway, a vector type font should be used on older first generation 
HUDs for authenticity.

LeeE

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