Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2007-06-05
2007-06-05
Korzuch, William (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S059240
Reexamination Certificate
active
10509233
ABSTRACT:
A writing scheme for writing an information to an optical recording medium by forming mark areas, e.g. pit areas, corresponding to a predetermined state of said information on a recording surface of said optical recording medium. The writing scheme is adapted to modulate the shape of said mark areas in a predetermined manner so as to obtain incomplete mark areas which do not fully cover the size which is allocated to the channel bit to be written. The incomplete mark areas may be obtained by modulating their shape in any manner suitable to reduce the reflection surface and/or to increase diffraction. Additionally, a multi-level modulation or a binary modulation may be achieved by controlling the shape or number of the incomplete mark areas, respectively, in accordance with the level of a multi-level coded information.
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Coene Willem Marie Julia Marcel
Van Someren Bob
Belk Michael E.
Gupta Parul
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