Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium
Reexamination Certificate
2006-04-25
2006-04-25
Huber, Paul W. (Department: 2653)
Dynamic information storage or retrieval
Systems having plural physically distinct independent tracks...
Having layered storage medium
C369S275200, C369S283000, C369S288000
Reexamination Certificate
active
07035190
ABSTRACT:
An information recording medium includes a first information layer and a second information layer. The first information layer includes a first recording layer in which a reversible phase change is caused between a crystalline phase and an amorphous phase by irradiation of a laser beam or application of current. The second information layer includes a second recording layer in which a reversible phase change is caused between a crystalline phase and an amorphous phase by the irradiation of the laser beam or the application of the current. The first recording layer is made of a first material, the second recording layer is made of a second material, and the first material is different from the second material.
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Kojima Rie
Nishihara Takashi
Yamada Noboru
Hamre Schumann Mueller & Larson P.C.
Huber Paul W.
Matsushita Electric - Industrial Co., Ltd.
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