Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2006-12-26
2006-12-26
Young, Wayne (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S094000, C369S288000
Reexamination Certificate
active
07154836
ABSTRACT:
An optical recording/reproducing method and an optical recording medium capable of performing excellent optical recording with a simple structure in a recording layer made of environmentally friendly materials. The optical recording medium has a recording layer on a substrate. The recording layer has a pair of dielectric layers of which states are altered by a laser beam that is an energy beam of which intensity is modulated according to information to be recorded. This recording layer also has a assisting material layer sandwiched by these dielectric layers. The assisting material layer includes an element selected from Sn, Ti, Si, Bi, Ge, and C as a principle component, while the dielectric material as a base material for the dielectric layers is any one of ZnS, SiO2, AlN, and Ta2O5.
REFERENCES:
patent: 4969141 (1990-11-01), Takaoka et al.
patent: 5635267 (1997-06-01), Yamada et al.
patent: A-62-204442 (1987-09-01), None
National Technical Report vol. 28, No. 6, Dec. 1982 (w/ English Abstract).
Aoshima Masaki
Arai Hitoshi
Hirata Hideki
Inoue Hiroyasu
Mishima Koji
Pham Van T.
TDK Corporation
Young Wayne
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