Optical disk system with non-linearly controlled amplifier

Details Optical disk system with non-linearly controlled amplifier Optical disk system with non-linearly controlled amplifier

2007-12-25

2007-12-25

Korzuch, William R. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S124100

Reexamination Certificate

active

10523386

ABSTRACT:
An optical disk system includes at least one photo detector connected with a variable gain amplifier, a slicer, and a generator which is in the feedback path between the slicer and amplifier. A differential time delay detector provides the output of the optical disk system. The generator is configured for controlling the amplifier non-linearly so that time constants of the control loop of the amplifier which depend upon the level of the input signals are compensated and the timing behavior of the control loop of the amplifier has a more continuous character. A capacitor forms part of an integrator for making the mean value of the output voltage signal of the slicer equal to zero.

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patent: 6236632 (2001-05-01), Hayashi
patent: 6690232 (2004-02-01), Ueno et al.
patent: 04355999 (1992-12-01), None
patent: 06187643 (1994-07-01), None
patent: 06187733 (1994-07-01), None

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