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zoned constant linear velocity (ZCLV)

The ZCLV (Zoned Constant Linear Velocity) method is a recording method ofDVDs. It is a variant of the CLV method in which the tracks are divided into zones depending on the radius.

As the name Zoned Constant Linear Velocity indicates, the method involves reading zones at a constant linear velocity. The rotational speed can vary from zone to zone. Zones that have a smaller radius have a lower velocity, while zones that are farther out have a higher velocity. Within a zone, however, the speed is constant. Depending on the radius, the tracks are divided into up to 24 zones. Thus, the individual zones deliver approximately the same amount of data.

The ZCLV process is used in DVD-RAMs.

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Englisch: zoned constant linear velocity - ZCLV
Updated at: 29.10.2011
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Translations: DE