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From: jimf@idayton.field.intel.com (Jim Fister)
Newsgroups: comp.arch
Subject: Re: CD-ROM II standard?
Message-ID: <1991Jan3.151718.3398@idayton.field.intel.com>
Date: 3 Jan 91 15:17:18 GMT
References: <009421D2.AF8D5120@KING.ENG.UMD.EDU>
Organization: Intel Corp./ Dayton Sales Office
Lines: 30

sysmgr@KING.ENG.UMD.EDU (Doug Mohney) writes:

>CD-ROM has been around for a while @ 550MB/disk. Will we see a
>second-generation CD-ROM format with something like 2 GB of storage, and
>downward compatability with current CD-ROM formats? Isn't more-than-550MB a
>necessity when you start playing with DVI/interactive video? (Unless you want
>to play games with compression all the time...)

Disclaimer:  I only know what I read, which can often be dangerous.

CD-ROM formats as defined by the Yellow Book published by Phillips and Sony
combined with the ISO9660 standard defines the format for storing data on
a CD.  The Phillips-Sony Red Book defines another format, CD-DA, which
audio disks use.  CD-DA gives you 750MB of storage on a standard disk and
CD-ROM gives you 660MB at some incredible error rate (10^-12).  I don't
think that there's much room to add to that at this time, mainly because
of the technology used to master the disk.

As far a DVI goes (which I know a bit about,too and I didn't get it all from
books) a CD-ROM can hold up to 70 min. of full-screen, full-motion video with
good quality stereo audio.  This is fine for almost all the applications
running today.  If a person needs more, he or she can always go to multiple
CDs or to big and expensive hard drives for more storage.

My reference for a lot of this was _Digital Video in the PC Environment_ by
Arch C. Luther, Second Edition, McGraw-Hill.  Just so you know.

Greetings from the Rocking Metropolis.

JimF