Article View: comp.arch
Article #20509Re: delay lines for memory
From: Gerald Q. Maguire
Date: Fri, 24 Mar 1989 23:19
Date: Fri, 24 Mar 1989 23:19
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2126 bytes
I first gave a talk which described using optical delay lines for data
storage in spring 1986 in Belgium and in The Netherlands. Following a
later talk which included this idea - I was ask by Dave Sincoskie of
BELLCORE if I had compared it to a disk, I had not at the time but
since have. This comparison and the limits to this technology are
described in a paper:
@Inproceedings[Maguire89c,
Key=<Maguire>,
Author=<G. Q. Maguire Jr. and P. R. Prucnal>,
Title=<High-density optical storage using optical delay lines:
Use of optical delay lines as a disk>,
Organization=<SPIE - The International Society for Optical
Engineering>\,
Booktitle=<Medical Imaging III>,
Year=<1989>,
Month=<January>,
Volume=<1093>,
Pages=<6 pages>
]
For those who are interested and can't wait for the proceedings, send
me e-mail and I'll mail you the PostScript version of this file (which
is 42173 bytes long). This file includes the diagrams.
I hope to find a student interested in building a prototype which will
act much like a SCSI disk (in having logical sectors), but with
considerably faster access time.
I anticipate a major application of this technology to be in local
swap space (as there are no moving parts and 500MB will fit within a 9
liter volume using a single frequency and much less volume if you
freq. multiplex - but you then increase the size and complexity of the
optics) and for image processing it makes an image from among 100T
bytes of image data available within 1 sec.
Chip
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!ukma!rutgers!columbia!cs!maguire From: maguire@cs.columbia.edu (Gerald Q. Maguire) Newsgroups: comp.arch Subject: Re: delay lines for memory Message-ID: <156@cs.columbia.edu> Date: 24 Mar 89 23:19:15 GMT References: <21976@lll-winken.LLNL.GOV> <28411@ucbvax.BERKELEY.EDU> <1257@houxs.ATT.COM> Organization: Columbia University Department of Computer Science Lines: 37 In-reply-to: beyer@houxs.ATT.COM's message of 17 Mar 89 18:36:25 GMT