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1999-04-27
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Electronic Engineering Times (11/01/93), page 8:
Rick Tompane, 3DO VP Technology: "The core of the system is a pair of
animation-cel engines working in parallel." Each engine is a complex
graphics pipeline, capable of 3D transformation, shading and lighting,
transparency control and texture mapping. The engines, whose exact
architecture is still a closely guarded secret, are implemented in ASICs
built by AT&T Microelectronics.
Engines: theoretical peak of 64 million pixels/sec, 40-50 average.
(16 bit CD-ROM = 1 Mpix/sec, 32 bit CD-ROM = 3 Mpix/sec. Whoa!)
"A key to the system's consumer-level cost is that the images are kept in
a simple but effective compressed format in main memory. The graphics
processors manipulate the image in its compressed form. Expansion occurs
only when a video processor extracts the frame from main memory and begins
feeding it to the display. 'We use a little temporal, a little spatial,
and a little color compression' Tompane said."
+ seperate custom DSP in one of the ASICs takes compressed audio and expands
it into CD quality stereo
+ housekeeping, I/O and control tasks are handled by a 32-bit RISC, the
ARM60.
+ 3DO Interactive Multiplayer accepts 3DO software, audio CDs, Kodak PhotoCD,
and video CD-ROMs, eventually including MPEG.
+ >70 software houses signed so far, including Paramount, Virgin, Ocean,
Dynamix (Sierra On-Line), Psygnosis, Maxis, and Spectrum HoloByte.
+ Companies license the system and build it, Matsushita (Panasonic) showed
the first prototype at WCES.
+ Investors: Matsushita, AT&T, Time-Warner (!), MCA, Electronic Arts, and
Kleiner Perkins Caufield & Byers (venture capital).
"As the crowed watched, the 3DO system took a still image, pasted it onto
the visible frame of a cube, then rotated the cube. It then made the cube
transparent, so that the still image could be seen on all six faces as the
cube rotated. It then bounced the cube around the screen, distorting it to
make it appear to be a graphics-laden block of Jello. (old SGI trick?)
The demonstrators also took a live feed from a camcorder, then manipulated
the 15 fps video, squeezing, twisting, peeling, and stretching multiple
representations of a 3DO employee's face. Next, the machine presented an
image of a revolving globe made of 120 facets, and sent it bouncing around
inside a 3D room; as this was going on, it orbited a graphic representation
of a light bulb around the globe, rendering the appropriate shading in
real time."