Multilayered optical disc and its recording method

Details Multilayered optical disc and its recording method Multilayered optical disc and its recording method

2011-04-26

2011-04-26

Renner, Craig A. (Department: 2627)

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Having layered storage medium

C369S047500, C369S053410, C428S064400

Reexamination Certificate

active

07933184

ABSTRACT:
In an optical disc having N (N is an integer larger than or equal to 3) information recording layers of rewritable or recordable type, each of the information recording layers includes an test area to adjust conditions for recording and reproduction and the test areas are arranged so that the radial positions thereof overlap those of other layers. Recording test is performed only to an area smaller than or equal to 1/N of the test area of each layer and any other area is always unrecorded (write inhibited).

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