Definition: Constant Linear Velocity: specification for or technique of ensuring that data is read off a storage medium at constant rate. * As those parts of a rotating disk near the perimeter travel faster than the parts near the centre, if data must be written onto or read off a disk at a constant rate, then the rate of rotation must slow down or speed up according to where the data exchange is taking place. Speedy spinners Music CD-ROM players are CLV as their rotational speeds are modest. But high-speed CD players working at 8X speed and over are generally not CLV machines as (a) they spin so quickly their momentum makes it tricky to vary their speed easily (b) unlike music, general data does not need to come on stream regulated speeds.

Related Terms: CAV

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