3D

[Fred Cisin]

> > I was talking about CAD displays with Stereo-Graphics "Crystal-Eyes"
> > using Silicon Graphics machines (at 120Hz).  I didn't realize that
> > your "high-resolution" remark was referring to "HDTV".

On Sat, 9 Oct 2010, Sridhar Ayengar wrote:
> I think the consensus on what was meant (in the thread) by "high
> resolution" was a minimum of a megapixel.

20 years ago, there WERE CAD displays (B&W) of megapixel as 120Hz.


Highest resolution that _I_ could afford at the time, on PC, was 1280 x
800, which was well short of a megapixel.      (B&W Amdek 1280, with
proprietary video board, but did have drivers for Windows 3.00, Ventura,
Paintbrush, etc.  By the time that Windows 3.10 came out (fall 1991),
support was already crumbling)



> > BTW, I do remember one crude attempt at 3D that did NOT depend on
> > binocular fusion!
> Wow!  How?  Using a display capable of rendering actual depth?

I warned you that it was CRUDE, . . .
You looked into a dark cabinet, in which there was a moving mirror,
reflecting a CRT.  The image would change according to the position of the
mirror.  When it was moving fast enough, persistence of vision would give
you a visual image in which parts of the image were actually different
distances!   I think that the images were chosen for maximum suitability.
I never saw a commercial implementation attempt.


--
Grumpy Ol' Fred     		cisin at xenosoft.com