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Conference cookie::notes$archive:cd_v1

Title:Welcome to the CD Notes Conference
Notice:Welcome to COOKIE
Moderator:COOKIE::ROLLOW
Created:Mon Feb 17 1986
Last Modified:Fri Mar 03 1989
Last Successful Update:Fri Jun 06 1997
Number of topics:1517
Total number of notes:13349

241.0. "Amazing CD error correction!" by SPEEDY::CLARK () Wed Jan 01 1986 19:22

Newsgroups: net.audio
Posted: 11 Dec 85 00:10:32 GMT
Organization: Ancient Illuminated Seers of Bavaria
 
	You may be interested to hear this little story:  I was demonstrating
the durability of CDs to a friend of mine, and, as I usually do to get the
best reaction, I sailed the CD across the room.  Well, this time it broke!
It hit the wall (oops) and cracked from the edge to the center -- completely
broken.  Just for fun, I aligned the edges by hand and put it in my D-5.
It played just fine!  
 
					Alexander G. Burchell
						
UUCP:	..!{decvax,ucbvax,hplabs,ihnp4,zehntel}!tektronix!reed!agb
MAIL:	Box 172, Reed College, 3203 SE Woodstock Dr., Portland OR 97202

(I thought that I posted this some time back, but can't find it now.
If it's a duplicate, let me know and I'll delete it.  -- Ward)
T.RTitleUserPersonal
Name
DateLines
241.1EDEN::ROTHFri Jan 03 1986 08:014
What's amazing is that the tracks ligned up - the pitch is only 1.6 
micrometers!

- Jim
241.2AKOV75::BOYAJIANMon Jan 06 1986 03:426
Of course, the "secret" is that the crack was radial. .1 is right that it's
amazing that the edges lined up well enough (and that the crack was narrow
enough) to disrupt only a couple of bits per track, which the error correction
could handle.

--- jerry