From: thinman@netcom.com (Technically Sweet)
Subject: TECH: seminar on 3D viewing among other things
Date: Thu, 11 Feb 93 18:13:43 -0800




I have no idea where Interval Technology hangs out.

A seminar most of you can't go to:

UC Santa Cruz:		Computer & Information Sciences, and
			Computer Engineering

RESEARCH SEMINAR:	Thursday, February 25, 1993, 10:30 - 11:30 AM
			Room 330, Applied Sciences Building

			
Cary Kornfeld, Interval Technology, will speak on `` Computational
Properties of Two Dimensional Device Arrays''

Abstract:

This talk describes four design variations of a simple 2D array of devices.
The Image Prism is an array of bitmap memory that employs a perverse inter-
connection matrix in order to perform orthogonal image transformations. A
chip based on this design is now produced by AMD and is widely used in
laser printers.

White Paint is a simple variant of this permuted matrix designed to act as
a flat display. The device array is called "White Paint" because it uses a
colloidal suspension of Titanium Oxide (white paint) as its primary display
component. The underlying circuitry for these displays uses a unusual VLSI
strategy to minimize fabrication induced defects. A number of small test
displays were fabricated at Xerox PARC. A short video of their behavior
will be shown.

OPIE is perhaps the strangest variant of all. Each element of the 2D array
is transformed from an amorphous silicon thin film transistor (a-Si TFT)
into an amorphous silicon photoconductor. The array is now light sensitive
and the interconnection between elements is determined by the pattern of
light falling on the array. These arrays were originally designed to act as
synapses for neural networks, but it appear to have a surprisingly diverse
set of other uses from signal processing to image analysis. "OPIE" is the
name of an Optically Programmed Neural Computer that we built with these
devices at Bell Labs. Again a short video tape will be shown of OPIE in
action.

Our experiences with these device arrays recently inspired a new series of
experiments in stereographic imaging. Traditional approaches employ time
multiplexing to alternately display left and right images. The user wears
LCD glasses synchronized to the display device. Our approach explores space
multiplexing to produce 3D images and does not require the viewer to wear
special glasses. A prototype 3D television system has been developed. A
demonstration of that system will be shown.

This is a wide ranging talk that spans a number of seemingly disjoint areas
that include abstract algebras for Bitmap Graphics Processors,
Electrophoretic suspensions, defect tolerant VLSI circuit design, device
characteristics of amorphous silicon devices, among others. No previous
background in any of these areas is assumed or required. This talk will be
of interest to computer scientists, electrical engineers and applied
physicists.
__________________________________________________

Anyone needing special arrangements to accommodate a disability is
encouraged to call Gerri McLellan at the Baskin Center - (408) 459-3695.


-- 

Lance Norskog
thinman@netcom.com
Data is not information is not knowledge is not wisdom.