Digital focus servo system with a sliding notch filter

Details Digital focus servo system with a sliding notch filter Digital focus servo system with a sliding notch filter

2005-08-30

2005-08-30

Edun, Muhammad (Department: 2655)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044270, C369S044340, C369S053280

Reexamination Certificate

active

06937543

ABSTRACT:
A notch filter that filters a focus error signal during a multi-track seek operation is presented. The notch filter has a center frequency that relates to the seek reference velocity of a multi-rack seek algorithm. During the multi-track seek operation, a focus control signal is calculated from the filtered focus error signal from the notch filter.

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