Digital servo system with calibrated notch filters

Details Digital servo system with calibrated notch filters Digital servo system with calibrated notch filters

2001-09-10

2009-02-17

Psitos, Aristotelis M (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044390, C702S077000, C700S280000

Reexamination Certificate

active

07492675

ABSTRACT:
A system which calibrates notch filters in a digital servo system is presented. A notch filter can be calibrated by obtaining a frequency response curve of the digital servo system in a range of frequencies, searching the frequency response curve for at least one peak frequency, and adjusting parameters of the notch filter to filter out signals at the at least one peak frequency. The digital servo system, for example, can be a tracking servo system or a focus servo system of an optical disk drive.

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MAT (machine assited translation) of JP 05—47125.

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