Information recording medium

Details Information recording medium Information recording medium

2006-04-25

2006-04-25

Neyzari, Ali (Department: 2656)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S275300, C428S064100, C428S064400

Reexamination Certificate

active

07035199

ABSTRACT:
In an information recording medium comprising at least a substrate, a recording layer, and a resin layer, the substrate is formed with at least a pit corresponding to a read only area31and a groove corresponding to a recording/reproducing area32without overlapping with each other. A reflectivity of the recording layer is specified to be more than 10%. The recording layer and the resin layer are continuously adhered over both the read only and recording/reproducing areas31and32. The information recording medium is characterized in that both push-pull signal outputs T1and T2, which are reproduced from the read only area31and the recording/reproducing area32respectively, are more than 0.1 and satisfy an inequality 1.5≧T1/T2≧0.5.

REFERENCES:
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patent: 6246656 (2001-06-01), Kawakubo et al.
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patent: 6442119 (2002-08-01), Sunagawa
patent: 6580678 (2003-06-01), Kondo et al.
patent: 2001/0005357 (2001-06-01), Ha
patent: 2002/0006104 (2002-01-01), Sato

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