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- Xref: sparky rec.video:15093 rec.photo:22511 comp.arch.storage:888
- Newsgroups: rec.video,rec.photo,comp.arch.storage
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!ra!ra.nrl.navy.mil!buck
- From: buck@ra.nrl.navy.mil (Loren Buchanan)
- Subject: Re: Photo CD
- Message-ID: <Bzrv3F.Dr7@ra.nrl.navy.mil>
- Followup-To: comp.arch.storage
- Summary: This aspect of PhotoCD is a storage issue.
- Keywords: PhotoCD formats conversion
- Sender: buck@ra.nrl.navy.mi
- Organization: Naval Research Lab, Washington, DC
- References: <92359.000218I18BC@CUNYVM.BITNET> <BzrtpH.DBL@ra.nrl.navy.mil>
- Date: Thu, 24 Dec 1992 16:28:26 GMT
- Lines: 54
-
- In article <92359.000218I18BC@CUNYVM.BITNET> CUNY/Spartacus <I18BC@CUNYVM.BITNET> writes:
- >In article <PD.92Dec20184108@horus.sics.se>, pd@sics.se (Per Danielsson) says:
-
- >>Digital (mostly magnetic) media seems to go out of fashion very fast.
- >>Have you tried to read a 7-channel tape lately? A punched tape?
- >>Can we be certain that somebody a hundred years from now can read a
- >>PhotoCD?
- >>A print can certainly be viewed a hundred years from now.
- ^^^^^^^^^^^^^^^^^
- >Sorry Per,
- > But you ought to know better than that being a computer person.
- >If its digital, it can be transfered to many different digital mediums.
-
- First a bit of netiquete, this topic has nothing to do with rec.arts.books,
- and second this thread is no longer appropriate for rec.video or rec.photo
- so I changed the followup to go to comp.storage.
-
- Per has hit upon a very important point. I don't see CDs in my 100 year
- crystal ball (except in various museums and in late 20th century arcania
- collectors hands). Heck we can no longer read 800bpi 9track tapes here
- and have no easy access to IBM clone 5 1/4 inch floppy drives.
-
- Getting back to my crystal ball as what is going to happen to CDs. First
- will be the development of a high density format CD which will use a blue
- (or possibly a blue-green) laser. These disks will hold probably three to
- four times the storage of current disks. The computer industry will quickly
- jump to this new format, the music industry probably won't.
-
- Other technologies I see as being major long term competitors to CDs are
- semiconductor and holographic storage techniques. I have not seen any
- thing recently on holographic, so I will leave that to someone else to
- discuss. I see by the end of this decade 2Gigabyte solid state disk drives
- in the PCMCIA format for under $500US (1992 dollars). In another 10 years
- it will be 2Terabytes for the same price. In the same time period I would
- expect CD technology to make one more jump forward in terms of density, but
- the killer is going to be speed. You can only spin these disk so fast and
- I don't see getting data rates much faster than 10Megabytes per second (if
- you can even get that fast), while these other technologies will have transfer
- rates of 1Gigabyte per second (give or take an order of magnitude) in the next
- few years.
-
- What does all of this mean for PhotoCD, I give it a useful life of 10 to
- 15 years before we will take our PhotoCD collection and transfer it to some
- other format.
-
- B Cing U
-
- Buck
-
- --
- Loren Buchanan (buck@curie.nrl.navy.mil) | #include <standard.disclaimer>
- NRL Code 5842, 4555 Overlook Ave. | #include <computer.graphics>
- Washington, DC 20375 (202) 767-3884 | #include <electronic.music>
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