Focus control for optical scanner

Details Focus control for optical scanner Focus control for optical scanner

2006-03-31

2009-10-13

Tran, Thang V (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044350

Reexamination Certificate

active

07602680

ABSTRACT:
The present invention relates to a method for correcting the operating point of a focus control loop for a scanner for optical storage media. According to the invention, the method comprises the steps of: extracting from a focus error signal (FE) a signal component caused by vertical wobble of the optical storage medium; integrating the extracted signal component; and correcting the operating point with the aid of the integrated signal.

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Search Report Dated Jun. 21, 2005.

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