Tracking error control system and method

Details Tracking error control system and method Tracking error control system and method

2004-12-27

2010-02-23

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044110, C369S044280, C369S053230, C369S053280, C369S044290

Reexamination Certificate

active

07668050

ABSTRACT:
A tracking error control system includes a tracking error signal generator in communication with an optical pickup head, a DC detector in communication with the tracking error signal generator and a comparator in communication with the DC detector and the tracking error signal generator. The operating optical signals received by the optical pickup head are operated with an offset signal to generate a tracking error signal. A direct current voltage of the tracking error signal is detected and compared with a reference voltage. The offset signal is adjusted according to the comparison result and fed back to the tracking error signal generator to adjust the tracking error signal.

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patent: 2003/0117912 (2003-06-01), Yoshimi et al.
patent: 2004/0136285 (2004-07-01), Chen et al.

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