From: brucec@phoebus.labs.tek.com (Bruce Cohen)
Subject: Re: Japanese stereo TV/computer terminals
Date: 18 Jun 91 20:22:08 GMT
Organization: Tektronix Inc.



In article <1991Jun18.161206.19250@milton.u.washington.edu> hlab@milton.
u.washington.edu (Human Int. Technology Lab) writes:

>         NTT's display has
>         two infrared sensors that track a viewer's head position
>         and adjust for these movements.  NTT hopes to produce
>         its screens for computer terminals and video phones but
>         says commercial systems are still two years away.
> 
>                                         (Edited by Robert Buderi)

Fascinating! Some questions come to mind:

1) How bad is the view of a screen for one person when the screen is
   tracking another person?  Is this inherently a solo device?

2) Could the position data also be sent to the computer building the
   image so both horizontal and vertical motion parallax can be
   computed?  The image could be regenerated for the different
   eye-positions, giving the illusion of looking at nearby objects
   through a window as the viewer moves.

3) How intrusive is the target for the tracking device (correct me if my
   assumption is wrong, but I would guess from your description that the
   viewer has to wear some sort of optical target which the sensors detect)?
--
------------------------------------------------------------------------
Speaker-to-managers, aka
Bruce Cohen, Computer Research Lab        email: brucec@rl.labs.tek.com
Tektronix Laboratories, Tektronix, Inc.                phone: (503)627-5241
M/S 50-662, P.O. Box 500, Beaverton, OR  97077


[MODERATOR'S NOTE:  Anyone at NTT have the answers? -- Bob Jacobson]