STEREOGRAPHICS DEMONSTRATES HOME 3D TV TECHNOLOGY; TV SET PLAYS BOTH NORMAL
AND STEREO 3D PROGRAMS

Receiver Plays Broadcast Compatible Stereoscopic Video from One Standard
NTSC Channel; Comfortable Eyewear is Used For Full Color Flickerfree Image
with Outstanding Sharpness

San Rafael, CA -- March 21, 1994--StereoGraphics Corporation will present a
technical feasibility demonstration of a home television receiver capable
of showing both regular TV and vivid three-dimensional stereoscopic
images. The set is being shown for the first time at the National
Association of Broadcasters (NAB) show, March 21-23, in Las Vegas.

The TV set switches instantly between the two modes. To watch the TV in 3D,
the viewer simply wears a pair of lightweight CrystalEyes stereoscopic
eyewear.

StereoGraphics is the world's largest supplier of three-dimensional
electronic stereoscopic equipment. The company's flagship product is the
lightweight CrystalEyes. More than 20,000 professionals worldwide use
CrystalEyes for applications such as scientific visualization on
workstations and personal computers, and medical imaging for surgical
procedures. CrystalEyes was invented and patented by Lenny Lipton, company
founder and vice president of Research and Development.

Lipton said, "All the technology is in place now for home stereoscopic TV.
The transition will be smooth, compared with the likely transition to
HDTV. Our system is broadcast-compatible using a single standard NTSC (or
PAL) signal. Broadcasters will need to transmit a special signal, but they
could switch back and forth between normal (planar) and stereo. The set
can automatically switch itself to the proper operating mode."

According to Lipton, "The challenges of converting to 3D capability for the
home are political, economic and marketing. The technology exists now.
We've solved the problems. With economies of scale, the additional cost of
manufacturing such a set is just a few dollars. The cooperation of
broadcasters, producers and set manufacturers is indispensable to pull
this together."

The TV used for the NAB demonstration is based on a standard 27-inch
Mitsubishi presentation monitor. The CrystalEyes infrared emitter was
built into the monitor to provide a synchronization signal for the
electronic eyewear, which uses liquid crystal lenses developed by the
company. The CrystalEyes video de-multiplexing circuit was added to
unscramble the 3D signal and display it as two high-quality images
alternating at a flickerfree rate of 120 fields per second. Each image has
the same number of TV lines as a standard broadcast image and each eye
sees a normal twofold interlace.

OTHER STEREOGRAPHICS VIDEO PRODUCTS

Also announced at NAB, StereoGraphics Model 2411M is a high-performance,
low-cost, two-channel full-color video multiplexing system. The
self-contained Model 241 allows two high-resolution, full-color video
images to be simultaneously transmitted or recorded and played back with a
single VCR. Users are able to transmit two channels in the space usually
occupied by a single NTSC channel. The system is designed for broadcast,
video, satellite, microwave or closed-circuit communications via land
lines using coaxial cables or fiber optic networks which require a
high-quality image.

StereoGraphics' CrystalEyes VideoSystem is routinely used for minimally
invasive surgery and for remote operations of vehicles. Recently, the
system has been used for education and corporate communications for Duke
University Medical School and the promotion of Motorola's Iridium System.

The self-contained CrystalEyes VideoSystem enables high resolution
full-color video true stereoscopic 3D images to be simultaneously viewed
and transmitted or recorded and played back with a single VCR. The
CrystalEyes VideoSystem is also NTSC and PAL compatible and works with
virtually all video equipment worldwide. The system requires no external
computer and uses standard video cameras, which are available as an
option.

StereoGraphics Corp., founded in 1980 and the world's leading manufacturer
of stereo viewing systems, invented and developed the market for modem
stereo imaging hardware. Due to its capability, reasonable price, and
state-of-the-art technology backed by 14 patents, CrystalEyes stereo
viewing systems are accepted as the industry standard for stereo viewing.
StereoGraphics is located at 2171 East Francisco Boulevard, San Rafael,
California 94901, phone 415/459-4500, fax 415/459-3020.

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