Re: Starting "Position" of a CD Rom Disk
- From: James Sweet <jamessweet@xxxxxxxxxxx>
- Date: Tue, 28 Feb 2006 02:41:28 GMT
carl0s wrote:
"Sam Goldwasser" <sam@xxxxxxxxxxxxxxxxxx> wrote in message news:6wwtfglg2b.fsf@xxxxxxxxxxxxxxxxxxxxx
"carl0s" <carl@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> writes:
"Brad" <bpetria@xxxxxxxxxxx> wrote in message
news:44030016.533486@xxxxxxxxxxxxxxxxxxxxxxxx
Hi,
I have been told that a data cd (also audio cd) is
first "read" from the middle track. Another person told me
that it is first "read" from the inside track. I always thought
it was first read from the outside (near the edge) track.
It is the inside. For this reason the performance of reading or writing gets
better as you nearer the end of the CD.
Not necessarily. :)
Am I correct in thinking that up until around about 32-speed drives, they would vary the spinning speed to maintain a precise transfer rate?
Yes, the early drives and audio CD players were Constant Linear Velocity (CLV) where the RPM varies to keep the data rate constant while faster drives are Constant Angular Velocity (CAV) where the RPM is steady but the data rate increases as you near the outer edge of the disc.
.
- References:
- Starting "Position" of a CD Rom Disk
- From: Brad
- Re: Starting "Position" of a CD Rom Disk
- From: carl0s
- Re: Starting "Position" of a CD Rom Disk
- From: Sam Goldwasser
- Re: Starting "Position" of a CD Rom Disk
- From: carl0s
- Starting "Position" of a CD Rom Disk
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