RE: 3D SPEX (and LCS in general)

[P3D John W Roberts <roberts@xxxxxxxxxxxxxxxxx>]

>Date: Thu, 28 Aug 1997 16:33:26 -0500
>From: P3D Larry Berlin  <lberlin@xxxxxxxxx>
>Subject: RE: 3D SPEX (and LCS in general)

>...I'm sure that inclusion of
>stereo image knowledge a long time ago would have had an effect on any
>number of other developments between then and now. We have no idea what some
>of those might have been, but I'll bet the underlying technology would have
>been far more stereo friendly now, had it been part of the thoughts of
>developers along the way.

It's probably about a three-part problem:
(1) It won't be included in the early plans unless there's a visionary
      and creative person who happens to be interested in it.
(2) The visionary person has to do a good job of selling the idea, or
      the management/sponsors won't approve.
(3) The idea has to make good business sense at the time, or even if it's
      approved, the product won't succeed.

P3D can help at least with (1), by increasing the chance that the people
designing a new technology will have been exposed to 3D, enjoyed it, and
understand the basic principles.

>>In the specific case of DMD devices, the micromirrors themselves have
>>considerable potential for frame sequential stereo - their switching
>>speed is claimed to be on the order of 10 KHz. 

>*****  You mean that the equivalent to vertical refresh might be 10 KHz? Or
>a full stereo image at 5 KHz? Wow. Rock steady. Flicker would become extinct.

The Web page (mentioned below) indicates a mechanical switching time of
~15-20us. Bear in mind that with pulse width modulation, there's a tradeoff
between the number of grayscales (colors) and the speed of switching.

><<<<<<<  Do they have some web pages describing the technology somewhere?

http://www.ti.com/dlp/main.html
The site includes some white papers that discuss the technology.

John R


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