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Posted by Roy L. Fuchs on 12/31/05 20:53
On Sat, 31 Dec 2005 18:55:01 GMT, bv@wjv.com (Bill Vermillion) Gave
us:
>In article <h8o9r199qbn2m24llsdm71fpeikiite3fv@4ax.com>,
>Roy L. Fuchs <roylfuchs@urfargingicehole.org> wrote:
>>On Fri, 30 Dec 2005 06:15:01 GMT, bv@wjv.com (Bill Vermillion) Gave
>>us:
>>
>>> That was nice for the CLV movies that were only
>>>1/2 hour per side.
>
>> CAV movies were the 0.5 hr per side individual frame versions, not
>>CLV.
>
>Sorry - my brain mis-fired.
>
>I do know better than that.
>
I figured you did.
CAV is the visibly sectored, single frame per revolution Constant
Angular Velocity disc. CLV is the WORM type session that gets slower
and slower as the laser progresses to the outer edge of the disc in
order to keep the bit rate the same, hence the name Constant Linear
Velocity. Since the pits are all the same length.
The older hard drives (different subject)actually had a poorer
lineal density at the outer cylinders. CAV LDs do as well. They got
rid of that with the advent of RLL platter formatting in the hard
drives. LDs that are CAV still must have only one frame per
revolution. Two fields.
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