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From: bill@videovax.Tek.COM (William K. McFadden)
Newsgroups: rec.video,rec.audio,sci.electronics
Subject: 60 min. of digital video on a CD
Message-ID: <4286@videovax.Tek.COM>
Date: Wed, 18-Mar-87 16:22:41 EST
Article-I.D.: videovax.4286
Posted: Wed Mar 18 16:22:41 1987
Date-Received: Fri, 20-Mar-87 05:37:48 EST
Organization: Tektronix Television Systems, Beaverton, Oregon
Lines: 28
Keywords: digital, video, CD
Xref: mnetor rec.video:778 rec.audio:1038 sci.electronics:405

In this week's _TV_DIGEST_, there is an article about a new system unveiled
at last week's CD ROM conference in Seattle which makes possible 60-72 minutes
of NTSC or PAL quality digital video (with digital audio) on a CD.  It was
developed by RCA and another big company whose name escapes me at the moment.
The system is claimed to be completely interactive and the demonstration drew a
standing ovation from the crowd of 1000.  The heart of the system is two VLSI
chips developed by a third company (the article mentions who, but I don't have
it in front of me, and can't remember).  The demonstration took Philips by
surprise, because this system is sure to threaten their CD-V system, which
contains up to 5 min. of analog video plus 20 min. of CD digital audio on a CD.
Also threatened is their CD-I interactive system, since the new system (CVI ?)
is interactive.  Data compression is used.  Without compression, the system's
developers say 30 sec. of video would take an hour to play back.  I assume
this means they are using a 120:1 compression ratio (you can bet the audio is
compressed, too).  This system is sure to cause a rethinking about the way
video is encoded on optical discs and may upset the entire video disc industry,
according to experts.

I'll post more as I find out more.

DISCLAIMER:  The publishers of _TV_DIGEST_ get particularly nasty when they
discover someone has been copying or reproducing their articles, so let me say
that the above is my interpretation of the facts presented, and nowhere is the
article quoted directly.
-- 
Bill McFadden    Tektronix, Inc.  P.O. Box 500  MS 58-639  Beaverton, OR  97077
UUCP: ...{hplabs,uw-beaver,decvax}!tektronix!videovax!bill
GTE: (503) 627-6920        "How can I prove I am not crazy to people who are?"