Spherical aberration correcting method and apparatus

Details Spherical aberration correcting method and apparatus Spherical aberration correcting method and apparatus

2007-11-27

2007-11-27

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S047490, C369S112020

Reexamination Certificate

active

10627081

ABSTRACT:
In a spherical aberration correcting apparatus, a test recording unit is configured to perform a test recording on an optical disk. A characteristic obtaining unit is configured to obtain a characteristic corresponding to a parameter by the test recording. The parameter is correlated with a spherical aberration. A correction amount deciding unit is configured to decide an optimum correction amount of the spherical aberration so as to minimize the spherical aberration according to the characteristic of the parameter. A spherical aberration correcting unit is configured to correct the spherical aberration according to the optimum correction amount of the spherical aberration.

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