Optical disk device and access method for optical disk device

Details Optical disk device and access method for optical disk device Optical disk device and access method for optical disk device

2007-07-24

2007-07-24

Dinh, Tan (Department: 2627)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

Reexamination Certificate

active

10629894

ABSTRACT:
An optical disk device has a recording information management portion which detects a distribution of a recorded region R and an unrecorded region M based on reflection light received by an optical head and an access target setting circuit which determines an access target of an optical head so as to make access to a target position of a recording layer of an optical disk while avoiding the unrecorded region M based on the detected distribution of the regions. Since an access is made while passing through only the recorded region R, a servo operation can be stabilized.

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