Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!zephyr.ens.tek.com!uw-beaver!milton!ttidca.TTI.COM!schear%sdcsvax@ucsd.edu From: ttidca.TTI.COM!schear%sdcsvax@ucsd.edu (Steve Schear) Newsgroups: sci.virtual-worlds Subject: Re: Wearing your computer Message-ID: <10428@ttidca.TTI.COM> Date: 4 Mar 90 04:09:59 GMT References: Sender: hlab@milton.acs.washington.edu Reply-To: ttidca.tti.com!schear%sdcsvax@ucsd.edu (Steve Schear) Organization: Citicorp/TTI, Santa Monica Lines: 17 Approved: hitl@hardy.u.washington.edu In article wex@sitting.pws.bull.com (Alan Wexelblat) writes: > >How about this: imagine that you have a desktop display that's capable of >creating a true 3D image of whatever you want. The display is 3D >holographic for all viewers at all angles. You can have whatever input >device(s) you like from today's catalogues. What do you do with this setup? > Alan, A device similar to your discription was invent at MIT about ten years ago, and subsequently build and sold by Genisco. Although it did not permit a 360 degree view, it did offer at least a 90 degree view. Its best feature, however,was its lack of a requirement for the viewer to wear glasses of any type. The device used a high frame-rate monochrome CRT, which was viewed off the surface of a mirror. The mirror was mounted on a synchronously moving voice coil (30/60 cps, I believe). The frames displayed on the monitor were slices of the 3D object. Because the frames were presented at a high enough rate, and each frame was viewed at a different distance form the observer (the moving mirror), the effect of of a rather solid object in 3-space was created within the brain of the observer. I saw the device once and was quite impressed. I don't know if its still being sold.