Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2011-01-18
2011-01-18
Lamb, Christopher R (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S112290
Reexamination Certificate
active
07872952
ABSTRACT:
An optical disk apparatus according to the present invention includes: a light emission section for emitting laser light; an optical system for irradiating the optical disk medium with the laser light; and an aberration control section for controlling aberration of the laser light. In one embodiment, the aberration control section repeatedly switches between a plurality of aberration setting states in a focus lock-in operation. In another embodiment, the aberration control section simultaneously sets a plurality of aberration setting states in a focus lock-in operation. As a result, a plurality of aberration setting states can be allowed to substantially coexist within a single optical system.
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Anzai Joji
Kadowaki Shin-ichi
Kajino Osamu
Kurozuka Akira
Lamb Christopher R
Panasonic Corporation
Renner , Otto, Boisselle & Sklar, LLP
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