Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Reexamination Certificate
2007-03-06
2007-03-06
Korzuch, William (Department: 2627)
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
C369S059110
Reexamination Certificate
active
10335896
ABSTRACT:
A high recording-density and highly reliable optical disc according to the two-dimensional PRML system is provided in which periodic signal fluctuations in the readout signal caused by an overall positional displacement of pits between adjacent tracks can be detected at each sampling clock timing and can be tracked and compensated. Two-dimensional inter-symbol interference is compensated during the production and recording of the pattern of the medium. The readout signal is compensated by a process of multi-value tracking before symbols are extracted from the signal.
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Toshio Goto et al, The Institute of Electronics, Information and Communication Engineers—Technical Report of IEICE, vol. 99, No. 573, MR99-76, 2000, pp. 1-8.
Isshiki Fumio
Nishida Tetsuya
Giesy Adam R.
Hitachi , Ltd.
Korzuch William
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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