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What (who) is Constant Linear Velocity - definition
constant linear velocity
<storage> (CLV) A disk driving scheme in which the {linear
velocity} of the disk is kept constant. This requires that
the angular velocity of the disk be larger when the reading
or writing tracks closer to the axis. The advantage of this
technique is that the read/write speed is constant. However,
as mechanical stability puts an upper limit on the angular
velocity (and not the linear velocity) using the same linear
velocity throughout, i.e., using less then the maximal angular
velocity at outer tracks means that the full potential of the
drive is not used.
(1998-03-27)
Constant angular velocity
![Constant Angular Velocity (CAV) [[LaserDisc]], showing the NTSC field setup and individual scanlines.](https://commons.wikimedia.org/wiki/Special:FilePath/Laserdisc CAV.jpg?width=200 "Constant Angular Velocity (CAV) [[LaserDisc]], showing the NTSC field setup and individual scanlines.")
QUALIFIER FOR THE RATED SPEED OF AN OPTICAL DISC DRIVE
Constant Angular Velocity; P-CAV; Partial constant angular velocity
In optical storage, constant angular velocity (CAV) is a qualifier for the rated speed of any disc containing information, and may also be applied to the writing speed of recordable discs. A drive or disc operating in CAV mode maintains a constant angular velocity, contrasted with a constant linear velocity (CLV).
constant angular velocity
QUALIFIER FOR THE RATED SPEED OF AN OPTICAL DISC DRIVE
Constant Angular Velocity; P-CAV; Partial constant angular velocity
<storage> (CAV) A disk driving scheme in which the {angular
velocity} of the disk is kept constant. This means that the
linear velocity of the disk be larger when the reading or
writing the outer tracks. The disadvantage of this technique
is that the read/write speed varies from track to track.
However, as mechanical stability puts an upper limit on the
angular velocity (and not the linear velocity) this allows the
full potential of the drive is used.
(1998-03-27)
Wikipedia
Constant linear velocity
thumb|300px|Comparison of several forms of disk storage showing tracks (not-to-scale); green denotes start and red denotes end.* Some CD-R(W) and DVD-R(W)/DVD+R(W) recorders operate in ZCLV, CAA or CAV modes.
