Science Fair Project Encyclopedia
Constant Linear Velocity
(Redirected from CLV)
Constant Linear Velocity (CLV) refers to how information is written to or read from a rotating data disk. A typical example can be seen in one of the differences between an LP record and a compact audio disc (CD). With an LP, the disc always spins at a Constant Angular Velocity (CAV) of 33⅓ rpm, so the surface of the record groove passes the needle at slower linear rate as the needle moves toward the center of the disc. Whereas, with a CD, the motor speed decreases from 495 to 212 rpm as the read head moves away from the center to keep the disc moving past the read head at a constant linear velocity (CLV) of 1.2 m/s.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details