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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

993.0. "CD physical (size/thickness) specs?" by FGVAXZ::LAING (Pipe Dreamer...Jim Laing @ 261-2194) Wed Dec 02 1987 07:37

    Where can I find a list of the CD's physical specs - size that is
    (diameter, thickness, tolerances, etc).  Sure I can measure a CD,
    but I'm interested in finding the EXACT specs and tolerance required
    of the manufacturers.
    
    I'm interested because I'm developing an alternate storage idea
    for CD's (other than jewel cases, that is) and want to be accurate...
    
    -Jim
T.RTitleUserPersonal
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993.1just wishingCIMNET::KYZIVATPaul KyzivatWed Dec 02 1987 16:025
It's too late now, but it would have been nice if CD's were packaged in
permanent enclosures like 3�" floppy disks.  They would be safer and smaller to
store at the same time.

	Paul
993.2Try Shrewsbury folksPARSEC::PESENTIJPThu Dec 03 1987 04:528
Jim:

You might want to contact the Storage Systems folks in Shrewsbury who are 
developing CDROM storage along with "jukebox" style library devices.  Sorry I 
don't have any names for you.

						     
							- JP
993.3Try here...GRAMPS::FORTIERFun =flying in the air with hotair!Thu Dec 03 1987 05:5815
    
    
    	The CDROM specs are called out in a document called the 
    'yellow book', if I remember correctly. The spec is of course
    proprietary to Philips and given to DEC under nondisclousure.
    You might try contacting Chris Williams here in Shrewsbury. 
    Chris and I worked on the RRD50, DEC's first CDROM drive back
    when we were working with Philips to develop CDROM. 
    
       Why so exact?
    
    		John
    		Ex-CDROM CSSE Eng.