Path: utzoo!dciem!king
From: king@dciem.dciem.dnd.ca (Stephen King)
Newsgroups: comp.ivideodisc
Subject: Re: How much can be put on a videodisc
Keywords: videodisc, size
Message-ID: <3756@dciem.dciem.dnd.ca>
Date: 20 Nov 90 19:28:01 GMT
References: <10527@ur-cc.UUCP> <39941@ut-emx.uucp>
Organization: Defence and Civil Institute of Environmental Medicine
Lines: 20

In article <39941@ut-emx.uucp> clouds@ccwf.cc.utexas.edu (Kathy Strong) writes:
>
>Due to my constitututional inability to deal with acronyms, I forget which
>is which--but I believe the faster one, the one that has 30 min/side, is the
>"standard."

CAV discs, usually considered the standard for interactive video systems,
are the 'faster' ones with 54,000 frames per side. CLV is the standard for
movies and the like -- they don't need a really good still frame. On CAV
discs the tracks are concentric, like a computer disc. On CLV discs, the
track is a spiral, like a phonograph record, and the disc spins faster when
reading the inner tracks in order to keep the same 'linear' velocity.

>(Help! I feel like I'm the only person talking on this newsgroup...)

Well I hope this helps to dispell such feelings, Kathy.

-- 
                       Se non e` vero, e` ben trovato 
     ...{utzoo|mnetor}!dciem!dretor!king        king@dretor.dciem.dnd.ca