Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2006-03-27
2010-11-16
Huber, Paul (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S053280
Reexamination Certificate
active
07835236
ABSTRACT:
There is provided a servo controller that can automatically set a filter intended for stabilizing a closed loop. The servo controller includes a repetitive controller. The repetitive controller implements repetitive control of a servo error signal (observation signal y(t)) by producing, by an adaptive line spectrum enhancer or adaptive linear prediction unit, a second error signal (including mainly a rotational sync signal) resulted from reduction of an irrotational sync component from a first error signal resulted from subtraction of the observation signal y(t) from a target signal r(t) and producing a third error signal obtained by sequentially updating the first error signal while making one-period delay of the second error signal.
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Huber Paul
Sony Corporation
Wolf Greenfield & Sacks P.C.
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