Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!amdahl!oliveb!cygnet!mark
From: mark@cygnet.CYGNETSYSTEMS (Mark Quattrocchi)
Newsgroups: comp.ivideodisc
Subject: Re: CD-ROM
Message-ID: <688@cygnet.CYGNETSYSTEMS>
Date: 14 Jan 88 21:35:56 GMT
References: <19898@teknowledge-vaxc.ARPA> <4469@watdragon.waterloo.edu> <2132@bloom-beacon.MIT.EDU> <5826@ccv.bbn.COM>
Reply-To: mark@cygnet.UUCP (Mark Quattrocchi)
Organization: Cygnet Systems -- Sunnyvale, CA
Lines: 28

In article <5826@ccv.bbn.COM> lawrence@BBN.COM (Gabe Lawrence) writes:
>yba@athena.mit.edu (Mark H Levine) writes:
>>
>>This seems unnecessarily pessimistic on several counts:
>>
>>Music CDs which use the same basic technology + a D/A converter come double
>>sided, CD-ROM drives can mechanically accomodate these disks as far as I have
>
>Funny... I own a couple of hundred music CDs and not one of them is 
>double-sided. 
>
>>seen (they use the same bloody drive in the case of Hitachi product I was
>>shown, and the only restriction on WORM product was the form factors involved).
>>The labelling problem is somewaht silly -- two-sided music cds have labels on
>>both sides, as do 8, 10, and 12 inch optical disks for video (with 2 sides).
>>The lasers do not seem to have any trouble with the plastic coat, nor would
>>I expect any.
>>...
>
>Sorry, I've never seen a music CD, or video disc for that matter although
>I'm not as sure, that was labelled on both sides.  The lasers might
>be able to read through surface dust or fingerprints but through completely
>opaque enamal labelling paints??  C'mon, let's be realistic!!
>
>Call me "Pessimistic in Cambridge",
>				       =Gabriel Lawrence=

Laser discs do have labels on both sides and they are in the middle just
like a record.