Multilayer optical disk, multilayer optical disk recording...

Details Multilayer optical disk, multilayer optical disk recording... Multilayer optical disk, multilayer optical disk recording...

2009-04-29

2011-11-08

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Having layered storage medium

C369S124030

Reexamination Certificate

active

08054728

ABSTRACT:
A multilayer optical disk apparatus comprises an optical pickup that emits N (N represents an integer of two or more) laser beams of the same wavelength. The optical pickup emits the N laser beams at the same time, focuses the N laser beams on a first recording layer group alternately configured by N recording layers of the multilayer optical disk and performs a recording operation on the N recording layers at the same time. When changing the recording layers the optical pickup focuses the N laser beams on a second recording layer group configured by recording layers adjacent to the respective recording layers configuring the first recording layer group and performs a recording operation on the N recording layers at the same time.

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