Optical disk device

Details Optical disk device Optical disk device

2006-05-30

2006-05-30

Korzuch, William (Department: 2653)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044270

Reexamination Certificate

active

07054237

ABSTRACT:
An optical disk device for driving an optical disk having an emboss section and a data section comprises an optical pickup for replaying address information by irradiating a laser beam onto the emboss section of an optical disk and writing data by irradiating the laser beam onto the data section of the optical disk, and a control unit for controlling the focus position when address information is replayed at the emboss section and the focus position when data are written onto the data section to a common focus position. By using the common focus position as the focus position when the emboss section is replayed and as the focus position when the data are written to the data section, it is possible to eliminate any need for rapidly switching the focus position at the boundary between the emboss section and the data section.

REFERENCES:
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patent: 6549498 (2003-04-01), Inoue et al.
patent: 6636465 (2003-10-01), Kobayashi
patent: 6678220 (2004-01-01), Saga
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patent: 2000251273 (2000-09-01), None
patent: 2000-353325 (2000-12-01), None
patent: 2002-32957 (2002-01-01), None

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