Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2007-04-26
2010-10-19
Feild, Joseph H (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
Reexamination Certificate
active
07817527
ABSTRACT:
Recording of data into a multilayer optical disk and reliable reproduction of the data are enabled. When user data are recorded on a multilayer optical disk having a first layer L0and a second layer L1, the second layer L1is formatted beforehand, to thus record dummy data. Subsequently, the user data are recorded into the first layer L0. Even after completion of recording of the user data at some point in the first layer L0, an area of the second layer L1located immediately above or below a recorded area of the first layer L0remains in a recorded state at all times. Compatibility with a play-only disk is maintained, and the play-only drive can reproduce the user data immediately after recording of the data.
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Feild Joseph H
Heyi Henok G
Seed IP Law Group PLLC
TEAC Corporation
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