[1] : The Free On-line Dictionary of Computing (27 SEP 03)

digital versatile disc
     
         dvd, formerly "digital video disc" an optical
        storage medium with improved capacity and bandwidth compared
        with the compact disc.  dvd, like cd, was initally marketed
        for entertainment and later for computer users.  when was it
        first available?
     
        a dvd can hold a full-length film with up to 133 minutes of
        high quality video, in mpeg-2 format, and audio.
     
        the first dvd drives for computers were read-only drives
        "dvd-rom".  these provide over seven times the storage
        capacity of cd-rom 4.7 gbytes.  dvd-rom drives read existing
        cd-roms and music cds and are compatible with installed
        sound and video boards.  additionally, the dvd-rom drive can
        read dvd films using an advanced mpeg-2 video board,
        required to decode the high resolution video format.
     
        the first drives, using a single-layer disc of 4.7gb, were
        expected to be available during the second half of 1996 from
        toshiba, philips, sony, hitachi and others.  in 1997,
        dual-layer discs were expected to increase the disc capacity
        to 8.5 gb.  double-sided, dual-layer discs will eventually
        increase the capacity to 17 gb.
     
        write-once dvd-r "recordable" drives record a 3.9gb dvd-r
        disc that can be read on a dvd-rom drive.  the first dvd-r
        drive was expected by mid 1997.
     
        by the end of 1997, the rewritable dvd-ram by false analogy
        with random access memory drive was expected to become
        available.  dvd-ram drives read and write to a 2.6 gb dvd-ram
        disc, read and write-once to a 3.9gb dvd-r disc, and read a
        4.7 gb or 8.5 gb dvd-rom.  also, it was expected that a
        dvd-ram disc would be readable on both the dvd-r and dvd-rom
        drives.
     
        background http://www.tacmar.com/dvd_background.htm.  rca
        home http://www.imagematrix.com/dvd/home.html.
        http://www.zdnet.com/products/special/current/dvd.html.
        http://www.zdnet.com/products/special/current/dvdsum.html.
     
        did this happen as predicted?  current state?
     
        1999-07-08
     
     
see also:
compact disc mpeg-2 cd-rom toshiba philips sony 
hitachi random access memory lt;backgroundgt; lt;rca homegt; lt;http://www.zdnet.com/products/special/current/dvd.htmlgt; lt;http://www.zdnet.com/products/special/current/dvdsum.htmlgt; 

Disc >> D Words
Disc, definition of term: Disc
disc_pag1.html

Digital >> D Words
Digital, definition of term: Digital
digital_pag1.html

Digital Watch >> D Words
Digital Watch, definition of term: Digital Watch
digital+watch_pag1.html

Digital Signatu >> D Words
Digital Signatu, definition of term: Digital Signatu
digital+signatu_pag1.html

Disc Jockey >> D Words
Disc Jockey, definition of term: Disc Jockey
disc+jockey_pag1.html

Disc Brake >> D Words
Disc Brake, definition of term: Disc Brake
disc+brake_pag1.html

Digital Signal >> D Words
Digital Signal, definition of term: Digital Signal
digital+signal_pag1.html

Disc Drive >> D Words
Disc Drive, definition of term: Disc Drive
disc+drive_pag1.html

Digital Multime >> D Words
Digital Multime, definition of term: Digital Multime
digital+multime_pag1.html

Digital Carrier >> D Words
Digital Carrier, definition of term: Digital Carrier
digital+carrier_pag1.html

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