RE: 3D SPEX (and LCS in general)

[P3D John W Roberts <roberts@xxxxxxxxxxxxxxxxx>]

>Date: Tue, 26 Aug 1997 18:24:28 -0500
>From: P3D Greg Marshall  <greg.marshall@xxxxxxxxxxxxxxx>
>Subject: RE: 3D SPEX (and LCS in general)

>>If these were LCD's you would be right, but the future at this point seems
>>to be all Digital Micro Mirror (the Texas Instruments technology that has
>>quickly begun to dominate the projection market; it is used by most of the
>>major Japenese vendors) which is even more stereo-friendly than CRT's.  It
>>is a great time to be doing high-quality stereo work!

>>John Urbanic

>Good point, I'd forgotten about DMM.  This is important because this
>technology will probably replace commercial film projectors.  However,
>considerable advancement and cost reduction is needed before it can
>be used for "personal" displays.  These devices already use an enormous
>amount of bandwidth to modulate intensity via time division    --------
 -------------------

Bandwidth of what? I believe the DMD (Digital Light?) displays usually
use pulse width modulation, and I had assumed that this was controlled
on-chip - no need to make the processor / graphics controller handle it.
Are you worried about power consumption of the chip?

> - doubling
>that to provide stereo would undoubtedly cause some TI engineers to
>pull their hair out in frustration!

Providing separate stereo images (at full bandwidth) *would* double the
display load on the processor / graphics controller.

>The likely candidate for future TV displays is fluorescent, which I have
>to admit I know nothing about.  But I suspect it has similar b/w
>limitations.

Is there any difference between a "fluorescent display" and a color
plasma display? Plasma displays generally use temporal modulation,
as do traditional passive matrix LCDs.

John R


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