Weighting servo signals for head positioning

摘要

In one embodiment, a servo positioning method includes deriving a first servo signal S₁ from a first servo band, deriving a second servo signal S₂ from a second servo band, defining a head element reference between the servo bands, weighting each servo signal according to a ratio of distances between the head element reference and a location on each servo band, and computing a servo control signal based on the weighted servo signals.