Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal processing for controlling recording light...
Reexamination Certificate
2009-01-07
2011-10-25
Simpson, Lixi C (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal processing for controlling recording light...
C369S059110
Reexamination Certificate
active
08045439
ABSTRACT:
A system includes an encoding module and a laser driver module. The encoding module is configured to encode a data stream. The laser driver module is configured to convert the encoded data stream into a write signal including one or more edges. The write signal is output to an optical writer. The laser driver module is configured to adjust an actual position at which the optical writer writes a first edge of the one or more edges on an optical storage medium away from a desired position for the first edge. The adjustment is made based on (i) a first preceding edge position, (ii) a first following edge position, (iii) a second preceding edge position or a second following edge position, and (iv) a third preceding edge position or a third following edge position. The first edge corresponds to a beginning of a mark edge of the write signal.
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“Modeling and Compensation of Asymmetry in Optical Recording”; Haralampos Pozidis, Member, IEEE, Jan W.M. Bergmans, Senior Member, IEEE, and Wim M.J. Coene; IEEE Transactions on Communications, vol. 50, No. 12; Dec. 2002; pp. 2052-2063.
“A Simple Nonlinear Model for the Optical Recording Channel” Haralampos Pozidis, Wim M.J. Coene, Jan W.M. Bergmans; Philips Research Laboratories; Jan. 10, 2001; 5 pages.
“Adaptive Asymmetry Corrector” Chris Painer; Jul. 15, 2009; 5 pages.
Dorgelo Jeroen
Kivits Peter J.
Marvell International Ltd.
Simpson Lixi C
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