From: frank@cavebbs.gen.nz (Frank van der Hulst)
Subject: Re: Sega glasses
Date: Mon, 02 Sep 91 08:27:03 GMT
Organization: The Cave MegaBBS, Public Access Usenet, Wellington, NZ



In article <9124118.13308@mulga.cs.mu.OZ.AU> hkt@ee.mu.OZ.AU (Haydn Thompson) 
writes:

>I've heard of the Nintendo powerglove but what are the Sega glasses
>that I just saw mentioned in

I'm fortunate enough to have access to both, so I guess I'd better answer. Sega
glasses contain two LCD shutters, one over each eye. One shutter is open at a
time. By synchronising the shutters with two stereoscopic images on a screen,
it is possible to give a good 3D effect.

The Sega glasses are not *very* good -- the shutters are not completely opaque
when they are shut. However, they are cheap, since they were designed for the
Sega home entertainment system (similar to a Nintendo system).

I have the glasses connected to a PC with a VGA screen (via the serial port,
since the glasses need +/- 12V). I have generated several 3D images using PD
raytracers (DBW_Render & DKB_Trace) -- each image is 320*400*256 colours.

I'll post the circuit for the interface here, once I've figured out a good
way to represent it in ASCII.

Frank.

-- 

Take a walk on the wild side, and I don't mean the Milford Track.
Kayaking: The art of appearing to want to go where your boat is taking you.