Re: arsclist Kodak is stopping CD-R manufacture !?

["James E. Baldwin" <jimbo@xxxxxxxx>]

Please excuse my ignorance but what is the Red Book Standard?

Jim Baldwin
==============================================
-----Original Message-----
From: Parker Dinkins <parker@xxxxxxxxxxxxxxxxx>
To: ARSCLIST@xxxxxxxxxxxxxxxx <ARSCLIST@xxxxxxxxxxxxxxxx>
Date: Wednesday, March 13, 2002 2:01 PM
Subject: Re: arsclist Kodak is stopping CD-R manufacture !?


>on 3/12/02 11:36 PM, Mike Richter wrote:
>
>> At 07:24 PM 3/12/2002 -0600, Parker Dinkins wrote:
>
>> My understanding is that the maximum length in the standard is 74
minutes.
>
>Based on my discussions with various plants, it is not possible to record
>more than +/-79:58 without violating Red Book standards. These standards
>govern the geometry of the recordable area as well as the linear velocity,
>thus solving the equation for maximum recording time becomes a mathematical
>problem, whose solution comes in just under 80:00.
>
>Whether and at what points a CD becomes non-standard for cutting purposes
>(up to +/- 79:59) depends on the hardware in use at a particular plant, and
>their policy. One very large plant has no such restrictions at all, based
on
>my telephone conversations with them. Another slightly smaller plant will
>not manufacture anything exceeding +/-77:00, period, and their fees
escalate
>after 74:xx.
>
>You are absolutely correct about potential problems on longer CDs, but
these
>problems have generally existed because older players often couldn't ramp
up
>enough speed (CDs are read inside -> out) to read the table of contents
>before timing out, or possibly the tighter inside diameter caused problems
>for them.
>
>I just want to stress that CDs that exceed 74:xx (up to +/- 79:59) are made
>at the discretion of the particular plant, using equipment and skills they
>possess. There is no uniform, industry-wide policy, except that no plant
>will make a CD exceeding +/- 79:59 without running the risk of losing their
>license to manufacture CDs.
>
>> The maximum value which can be entered in the ATIP is 79:59:74, but such
an
>> "80-minute" disc uses all the slack allowed for manufacturing tolerances
in
>> the pitch of the spiral. In practice, modern hardware can usually handle
a
>> still tighter pitch so there are blanks manufactured for recording 90, 95
>> and even 99 minutes. There are writers, programs and players which will
>> handle those discs, but as the person responsible for pressing my discs
>> makes clear, as soon as one exceeds 74 minutes, playback failure rates
rise
>> steeply. He will press a longer disc - up to 79:59:74, but only if I sign
>> up to that understanding and assume responsibility.
>
>---
>Parker Dinkins                      CD Mastering + Audio Restoration
>MasterDigital Corporation               http://www.masterdigital.com
>
>
>-
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