Pioneer proposes DVD-RAM standard. The COMDEX news is rolling in................
Pioneer Proposes DVD-R/W Standard
TOKYO--(BUSINESS WIRE)--Nov. 17, 1997--Pioneer Electronic Corp. announced its
development, in collaboration with Pioneer Video Corp., of a new DVD-R/W system based on
DVD-R specifications.
Pioneer proposed this system to the DVD Forum Working Group for standardization on October
27, 1997. Pioneer New Media Technologies plans to market DVD-R/W products domestically
once the standard is approved.
DVD-R/W systems are rewritable and achieve this characteristic by using a phase-change alloy
material in the recording layer of the disc. An equal signal quality to DVD-Video and DVD-ROM
has been obtained by improving the reflectivity ratio in physical characteristics, short-recorded pit
playback characteristic, and also served signals of the recorded disc. This recording format complies
with the DVD-R standard and can be played-back on existing DVD-Video players and
DVD-ROM drives.
With this newly developed technology, DVD applications for authoring and file recording can benefit
from rewritable capabilities. The DVD Forum Working Group will examine the system for
publication as a standard.
DVD-R/W systems will have the same record/playback physical characteristics (user data capacity
of 3.95 GB/side) as the DVD-R Version 1.0 standard. The same operations can be run as
DVD-Video and DVD-ROM discs containing the same quantity of data.
TDK Inc., Mitsubishi Chemistry Inc. and Hitachi Maxwell Inc. will support media development, and
JVC Inc. will support the application development for the new system.
Outline of DVD-RW Specifications
User storage capacity(b) 3.95GBytes/side (12cm disc)
1.23GBytes/side (8cm disc)
Laser wavelength(a) 635/650 nm
Numerical aperture of lens(a) 0.60
Data bit length(b) 0.293 um/bit
Track pitch(b) 0.80 um
Tracking method(a) Phase Differential Method
Disc diameter(a) 120mm (12cm disc) /80mm (8cm disc)
Disc thickness(a) 0.60 x 2mm
Sector size(a) 2048 bytes
Error correction system(a) Reed-Solomon Product Code
Disc revolution(b) 3.84 m/s (CLV)
User Data transfer speed(a) 11.08 Mbps
Recording Laser wavelength(b) 635nm
Track format(b) Groove recording method
Recording layer Phase medium
Recording method Laser power modulation
Pre-address (Pre-format)(b) Groove wobble +I and pre-pit
method
(a) features conformity with READ ONLY DVD(DVD-ROM)
(b) features conformity with DVD-R
Pioneer New Media Technologies
The Optical Division of Pioneer New Media Technologies Inc. is dedicated to bringing the very best
of leading-edge technology to market. Pioneer invented the world's first multiple-disc CD-ROM
changer and offered the first multifunction optical drive capable of reading and writing to both MO
and WORM. The Optical Division's products include DVD-Recordable and DVD-ROM drives;
CD-ROM drives, changers and jukeboxes; optical drives; MO, WORM, CD-R and DVD-R
media for a wide range of storage solutions in the educational, government, legal, banking, medical,
insurance, finance, industrial and general business markets.
For more information, contact Pioneer New Media Technologies, Inc. at 2265 E. 220th Street,
Long Beach, Calif. 90810; phone (310) 952-2111 or (800) 444-6784; URL:
www.pioneerusa.com
CONTACT: Roberts, Mealer & Co.
Sylvia Chansler/Stefanie Lopez, 714/957-1314
schansler@rmc.xo.com
slopez@rmc.xo.com
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