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From: chung@ils.nwu.edu (Mark Chung)
Newsgroups: comp.ivideodisc
Subject: Re: How much can be put on a videodisc
Message-ID: <18@anaxagoras.ils.nwu.edu>
Date: 20 Nov 90 23:47:23 GMT
References: <3863@mindlink.UUCP>
Sender: news@ils.nwu.edu
Organization: The Institute for the Learning Sciences -Northwestern U.
Lines: 31

In article <3863@mindlink.UUCP> a544@mindlink.UUCP (Rick McCormack) writes:
> Rumors have abounded for about 5 months that there is a version of
> CLV being tested that includes a _frame grabber_ - a memory unit that 
will hold
> individual frames for use as stills.  This would give us access to up to 
2
> hours of video, with the added advantage of stills 
> 
> Actually, there is no reason why CLV units could not be equipped with 
built-in
> frame grabbers capable of storing from 1 to 4 frames at a reasonable 
price.

The Pioneer LDV-8000 has a frame memory, so it handles still and other 
special effects (step, fast forward/reverse, still with independent audio) 
with CLV (I just tried it). 
However, we are using CAV disks in order to support stills on older 
machines such as the
LDV-4200 and the LC-V330 (autochanger).  Our prototype system uses a
video digitizer (RasterOps 364) which puts the image on the Mac monitor. 
This board also
can freeze the image, but in some situations we use a tv monitor, and the
player must freeze the image.

The Pioneer manual says that in order to support CLV special effects the 
disk must
be recorded with a second code. Our own disks and the Nat'l Geographic 
disks seem to
have this;  is this fairly standard?

Mark