Maxell Releases 4.7 GB Large Capacity DVD-RAM Disc.Business Editors/High-Tech Writers TOKYO--(BUSINESS WIRE)--June 8, 2000 This New DVD-RAM A rewritable DVD disc endorsed by the DVD Forum. Using phase change technology, DVD-RAMs are like removable hard disks, and the media can be rewritten 100,000 times compared to 1,000 times for DVD-RW and DVD+RW. The first DVD-RAM drives with a capacity of 2.6GB (single sided) or 5. Media Provides High Quality 2-Hour Digital Recording and Large Capacity Data Recording. A Small Size (80mm) DVD-RAM Disc for Video Camera Use is Also Being Released. Hitachi Maxell Hitachi Maxell (日立マクセル Hitachi Makuseru , Ltd. (President Norio Akai Akai (Akai Electric Company, Ltd. Traditional Chinese: 雅佳) is a consumer electronics brand, originally founded as a Japanese manufacturer in 1929. ) will release its rewritable Refers to storage media that can be re-recorded many times. Contrast with write once. See magnetic disk, magnetic tape and rewritable optical disc. 4.7GB DVD-RAM (DVD-RAM Book Ver.2.0) beginning July July: see month. 10th. The disc holds up to 2 hours of digital recording or 4.7GB of computer data. In addition, a 60 minute (high-quality mode) 2.8GB DVD-RAM disc for video camera use will be released August 25. The 4.7GB disc will begin be shipped to PC manufacturers in June June: see month. . The market for DVD DVD: see digital versatile disc. DVD in full digital video disc or digital versatile disc Type of optical disc. The DVD represents the second generation of compact-disc (CD) technology. is increasing with the expanding usage of DVD players A stand-alone device that plays DVDs. It contains a DVD drive and the electronics to decode the digital video. The device may play only manufactured DVDs, or it may be able to play DVD-R, DVD-RW and DVD+RW discs. DVD players are cabled to a TV or home theater system for display. in homes. In Japan, the Broadcasting Satellite Broadcasting Satellite or BS is a common name of Japanese communication satellites. First ever satellite of this series, called BSE or Yuri was launched in 1978, last satellite of BS series or BS-3b was launched in 1991. digital broadcasting Digital broadcasting is the practice of using digital data rather than analogue waveforms to carry broadcasts over television channels or assigned radio frequency bands. It is becoming increasingly popular for television usage (especially satellite television) but is having a is planned to start by the end of this year and broad band network service is expected to grow substantially. The use of PCs and the internet has been increasing in the homes of the average consumer. The infrastructure for distributing and exchanging high quality digital data, picture, and sound at high-speed high-speed adj. 1. Operated or designed for operation at high speed: a high-speed food processor. 2. Taking place at high speed: a high-speed chase. 3. bit transfer rate is gradually being set up. The DVD-RAM disc has the ability to play, rewrite re·write v. re·wrote , re·writ·ten , re·writ·ing, re·writes v.tr. 1. To write again, especially in a different or improved form; revise. 2. , save, and exchange data due to the demands presented by this newly emerging digital society. DVD media has to handle movies, still pictures, sound, and computer data in addition to addressing copyright protection issues. Maxell was the first to release a 2.6GB (1st generation) DVD-RAM disc to the world in April 1998. This was used mainly for PC file backup and network server backup. Maxell DVD-RAM discs come in five different configurations. The 4.7GB single sided disc comes in two types (with cartridge (1) See phono cartridge. (2) A removable storage module that contains magnetic disks, optical discs, magnetic tape or memory chips. Cartridges are inserted into slots in the drive, printer or computer. and without) and the 9.4GB double-sided (cartridge type) is ideal for data storage use. In addition, 120mm single-sided single-sided adj (COMPUT) [disk] → de una cara DVD-RAM videodiscs and 80mm small-sized DVD-RAM videodiscs are being heralded as the new VHS (Video Home System) A half-inch, analog videocassette recorder (VCR) format introduced by JVC in 1976 to compete with Sony's Betamax, introduced a year earlier. format for video recorders See DVR, DVD-R and DVD drives. and camcorders respectively. The DVD-RAM disc is expected to become the media of choice for storage of digital information in the 21st century.
Product Name Model Name Release Date
------------ ---------- ------------
Data Use Double-sided 9.4GB DVD-RAM disc DRM94F July 10
(Cartridge type)
Data Use Single-sided 4.7GB DVD-RAM disc DRM47R Aug 25
(Cartridge type)
Data Use Single-sided 4.7GB DVD-RAM disc DRM47 Sep 25
(Without cartridge)
DVD-RAM disc for Video Recording(a) DRM-V47R July 10
(Standard mode, Single-sided 120 min.)
Mini (80mm) DVD-RAM disc for Camcorder(a) DRMS-28R Aug 25
(High-quality mode, Double-sided 60 min.)
(a) Come in cartridge style
Features
1. Increased capacity
In comparison to previously released media the recording capacity has
been expanded 1.8 times through the increment of track density and
linear record density using the land & groove recording method.
2. Excellent random access format for PC media
Utilizing the random access format allows for quick access of files
for PC and Server media. The data transfer rate is doubled up to 22.16
Mbps making the disc suitable for recording PC data in addition to
recording Audio and Video data.
3. High reliability and durability
A low error rate disc with high S/N ratio and supplemental spare area
for defect management contribute high reliability. By optimizing the
phase change recording layer to the fullest, Maxell has enabled the
media to maintain its quality even after repetitive recordings. In
addition, storage ability is rated at a 10 years minimum (Based on
Maxell testing).
4. Enclosed in a durable cartridge with a special overcoat on the
disc surface to ensure data protection
The disc is protected from debris and fingerprints with a durable
cartridge. Incorporating a special overcoat layer on its surface also
further protects the recording side of the disc. The combination of
these two steps ensures a high degree of safety during handling.
5. Type 2 cartridge compatible with future DVD players
DVD-RAM Type 2 removable disc allows for use with DVD-RAM compatible
DVD players, allowing playback of movies, etc.
Type of Use Model Name Disc Diameter Cartridge Removable
type from
cartridge
Data use DRM94F 120mm TYPE 1 no
DRM47R TYPE 2 yes
DRM47 No cartridge -
Video use DRM-V47R 120mm TYPE 2 yes
DRMS-V28R 80mm TYPE 2 yes
6. 120mm disc (DRM-V47R) incorporates a copyright protection feature
The 120mm-disc for video recording allows for copyright protection,
utilizing CPRM (Copy Protection for Recordable Media), a copy
generation restriction and management system.
7. Already formatted for easy use
The video use DRM-V47R and DRMS-V28R are available pre-formatted which
allows for instant use.
Specifications
Item Data Use Video Use
DRM94F DRM47R DRM47 DRM-V47R DRMS-V28R
Sides used Double- Single- Single- Single-sided Double-sided
sided sided sided
Recording 9.4GB 4.7GB 4.7GB 120 min 60 min
Capacity (Standard (High-quality
mode) mode)
Laser
wavelength 650nm
Numerical
aperture of
Objective lens 0.6
Recording
layer
Materials Phase change recording materials
Substrate
material Polycarbonate
Minimum
data bit
length 0.29um
Recording
Format Wobbled land and groove
Track pitch 0.62um
Sector Size 2,048 Bytes
Modulation
Method 8/16 RLL(2,10)
Error
correction
Code Reed-Solomon product code
Reference
data Transfer
rate 22.16Mbps
Disc
dimensions
(diameter) 120mm 80mm
(thickness) 1.2mm 1.2mm
(disc center 15.0mm 15.0mm
hole diameter)
Cartridge
dimensions 138mm x 125mm x 8mm (without 138mm x 91mm x
cartridge) 125mm x 89mm x
8mm 5.4mm
Operating
environment 5C 60C 3% 85%RH
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