Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2009-07-20
2010-10-26
Neyzari, Ali (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S275300, C428S064100, C428S064400
Reexamination Certificate
active
07821911
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.
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Connollly Bove Lodge & Hutz LLP
Neyzari Ali
Victor Company of Japan Ltd.
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