[rec.motorcycles] Heads up display for a motorcycle helmet

dk1z#@andrew.cmu.edu.UUCP (02/21/87)

  I've ridden motorcycles for quite a few years, much of that out of town,
either just wandering around or actually trying to get somewhere 600 miles
away. I've used tank bags to hold my maps, but all in all, they are not
ideal. It's hard to get enough of the map visible, the maps tend to die young
due to a lot of refolding, I never have all of the maps I need, and I have to
take my eyes well off of the road for a considerable interval if I want to
check out the map and keep rolling. So, what would be ideal is a heads up
display for the map. (We will leave out guages and the like for a moment.)

  Unfortunately, the only place I've seen anything quite like what I want is
in a movie called Time Rider. Not too easy to get ahold of, even if it were
real. Has anyone developed anything like this, however experimental? It seems
to me that with a CD player with the maps on it, an interface between the CD
and the HUD, and a HUD for the helmet, you could do this. Digitizing a map
and getting it onto a CD must have already been done and the
interface/controller to scroll through the map should not be too tough. But I
know very little about HUDs. How do they work? How much would one cost? Could
you put one into a motorcycle helmet (leaving most of the electronics on the
bike? Would it be legal? (Obscuring vision, or something like that.)

  So, any pointers to existing gear for this, CD maps (with associated
hardware), HUDs, literature, et all would be most appreciative. I'm probably
dreaming, but it'd be interesting to look into.

-David Kovar

ron@brl-sem.UUCP (02/24/87)

I suspect that the current heads up display technology is a bit
rough for motorcycle application.  The way they currnetly work is
to have a box, about the size of a shoe box, with some display in
it which is columnated and bounced off a semireflective surface in
front of the viewer.  This sounds a bit clunky for a helmet mount.

As for storage, the only consumer system that I've seen is ETAK.
ETAK uses a CRT for a display and stores map info on (gak) cassette.
I noticed that National Car Rental at SFO had these available in
their cars.

-Ron