Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2007-09-25
2007-09-25
Neyzari, Ali (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S278000, C369S044130, C720S718000
Reexamination Certificate
active
10790861
ABSTRACT:
An optical recording medium has a user data area and a lead-out area, wherein the user data area and the lead-out area each has grooves and lands formed thereon. Wobbles are formed on at least one lateral surface of grooves of the user data area and the lead-out area, and configured such that wobble characteristics are made different between the user data area and the lead-out area. Different types of wobbles are formed on the grooves of either the user data area or the lead-out area, thereby preventing an optical pickup that performs recording/reproduction from deviating from the user data area. Also, in a multi-layer optical recording medium, a whole area of a recording layer is configured to have a same condition, thereby preventing deterioration in reproduction and/or recording due to a difference in light power transmittance of another recording layer.
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Choi Byoung-ho
Lee Kyung-geun
Shim Jae-seong
Yoon Du-seop
Neyzari Ali
Samsung Electronics Co,. Ltd.
Stein, McEwen & Bui LLP
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