Article View: comp.arch
Article #12729Re: optical disks
From: Roy Smith
Date: Tue, 18 Nov 1986 19:19
Date: Tue, 18 Nov 1986 19:19
30 lines
2209 bytes
2209 bytes
In article <102@rb-dc1.UUCP> bissell@rb-dc1issell.UUCP (jack bissell) writes:
> Since one of the problems with a fast optical disk is the movement of
> a heavy arm and head mech. would be to not move the arm but to move
> the data. [did I miss something there? RHS]
I suppose this is a bit off the wall, but how about using a phased
array to steer a laser beam over the face of a stationary data surface.
I'm not 100% sure how you would read the data, and my field theory is so
rusty that I have no idea if this is even plausable, but it sure could be
fast. No moving parts either.
I remember reading an article about phased-array radars sometime in
the past year or two. Probably either IEEE Spectrum or Sci. Am. (How's
that for a precise reference :-)). I'll have to go re-read the article.
On a totally different note, I saw an ad recently for what I
thought was the cleverest new disk idea I've seen in a long time. A 20
Mbyte hard disk for an IBM-PC where the HDA was so small it was mounted
right on the controller card! No muss, no fuss, no more cables hanging out
the back of your machine. Not push-back-the-limits-of-technology stuff,
but an elegant engineering solution regardless. Cost was $300-something.
I'm still kind of freaked out by the idea that you can buy a 20 Mbyte disk
for about the same price as dinner for 4 in a high-class restaurant.
RK-05's anyone?
--
Roy Smith, {allegra,cmcl2,philabs}!phri!roy
System Administrator, Public Health Research Institute
455 First Avenue, New York, NY 10016
"you can't spell deoxyribonucleic without unix!"
Technical Details
Message-ID:
<2507@phri.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!mnetor!seismo!cmcl2!phri!royReferences:
<1256@hoptoad.uucp> <13679@amdcad.UUCP> <102@rb-dc1.UUCP>Show Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!cmcl2!phri!roy From: roy@phri.UUCP (Roy Smith) Newsgroups: comp.arch,comp.periphs Subject: Re: optical disks Message-ID: <2507@phri.UUCP> Date: Tue, 18-Nov-86 14:19:58 EST Article-I.D.: phri.2507 Posted: Tue Nov 18 14:19:58 1986 Date-Received: Wed, 19-Nov-86 06:10:21 EST References: <1256@hoptoad.uucp> <13679@amdcad.UUCP> <102@rb-dc1.UUCP> Reply-To: roy@phri.UUCP (Roy Smith) Organization: Public Health Research Inst. (NY, NY) Lines: 30 Summary: phased arrays -- sci-fi or engineering breakthrough?