Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2011-03-08
2011-03-08
Haley, Joseph (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S275100
Reexamination Certificate
active
07903535
ABSTRACT:
There is provided a new medium structure to record a bar code for copyright protection or the like in an optical information recording medium capable of recording and reproducing information by a laser with respect to a dye. When a laser beam30is irradiated and an optical disc10is rotation in the direction of an arrow F, the dye of a recording layer is decomposed, a mark piece MA of a bar code20is formed, and a substrate is deformed by heat generated by the dye decomposition. Next, the position of the laser beam30is shifted to a position where a part overlaps with the mark piece MA, and when the optical disc is similarly rotated in the direction of the arrow F, a mark piece MB is formed to overlap with the mark piece MA. The above processing is repeated, so that the length of a bar is sequentially lengthened, and the bar code with a length along the standard is formed.
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Fujii Toru
Okitsu Isao
Satoh Masashi
Shimizu Atsuo
Haley Joseph
Law Office of Katsuhiro Arai
Lee Nicholas
Taiyo Yuden Co. Ltd.
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