Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!subramn
From: subramn@cs.utexas.edu (K. R. Subramanian)
Newsgroups: comp.graphics
Subject: Re: Optical disk video recorders (was single frame VCRs)
Message-ID: <1062@ai.cs.utexas.edu>
Date: 28 Nov 90 17:17:59 GMT
References: <3379@bruce.cs.monash.OZ.AU> <3382@bruce.cs.monash.OZ.AU> <1990Nov27.185614.8769@imax.com>
Organization: U. Texas CS Dept., Austin, Texas
Lines: 23

In article <1990Nov27.185614.8769@imax.com> dave@imax.com (Dave Martindale) writes:
>In article <3382@bruce.cs.monash.OZ.AU> mark@bruce.cs.monash.OZ.AU (Mark Goodwin) writes:
>>Seen in "Computer Graphics World", Sept. 1990, page 113 :-
>>
>>Panasonic LQ-4000 is a **rewritable** optical disk recorder
>>for S-VHS, NTSC and RGB, with standard RS-232C interface
>>and built in video transcoders.
>
>They had one of these at SIGGRAPH.  However, it was $35-40k to buy,
>compared with the Sony write-once unit at $20k.  And the rewritable
>medium is $1000, compared with $300 or $400 for the Sony's write-once.
>

I have used one of the Panasonic disc recorders at our supercomputer
center. One big problem during playback is, if the frames in the 
disc are not in sequence, then you are going to see an annoying
flicker (the search time to go to a different part of the disc
is clearly noticeable).  On a rewriteable disc, it is possible
to move the frames around so that they are in sequence and 
produce flicker free animation. Perhaps the newer versions
of the video discs are better than the one we used, I dont know.

	-- KRS --