Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2008-05-20
2008-05-20
Nguyen, Hoa T. (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S275400
Reexamination Certificate
active
10995155
ABSTRACT:
A method for appropriately performing initialization of an optical information recording medium is provided, in which an initialization process is prevented from stopping so that yield from manufacturing the optical information recording medium is improved. In the initialization of an information layer with a burst cutting area (hereinafter referred to as “BCA”), at least one of the initialization conditions including a laser power, a linear speed, and a focal point of the laser beam for the information layer is changed between the BCA region and a data area that is an area for recording and reproducing information. In the initialization of an information layer without the BCA, at least one of the initialization conditions including a laser power, a linear speed, a focal point of the laser beam for the information layer and a feed pitch is changed between the area corresponding to the BCA and the area corresponding to the data area.
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Nagata Ken'ichi
Nishiuchi Ken'ichi
Sakaue Yoshitaka
Heyi Henok
Matsushita Electric - Industrial Co., Ltd.
Nguyen Hoa T.
Wenderoth , Lind & Ponack, L.L.P.
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