Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting
Reexamination Certificate
2011-05-17
2011-05-17
Young, Wayne R (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Including sampling or a/d converting
Reexamination Certificate
active
07944791
ABSTRACT:
An information reproducing method using PRML technology which provides asymmetry compensation and also assures media interchangeability. To compensate for asymmetry, target levels are basically adapted to readout signals and either restriction type (1) (time reversal and level reversal symmetry) or restriction type (2) (time reversal symmetry) is imposed between target levels. As a consequence, asymmetry compensation is made regardless of a readout signal distortion such as mark shift which might deteriorate media interchangeability.
REFERENCES:
patent: 5469415 (1995-11-01), Fujita et al.
patent: 5563862 (1996-10-01), Udagawa
patent: 5796693 (1998-08-01), Taguchi et al.
patent: 6289059 (2001-09-01), Yamaguchi et al.
patent: 6721254 (2004-04-01), Yamaguchi
patent: 2001/0048649 (2001-12-01), Yamaguchi et al.
patent: 2002/0067677 (2002-06-01), Miyashita et al.
patent: 2004/0101072 (2004-05-01), Fitton et al.
patent: 9-231635 (1996-02-01), None
patent: 10-312640 (1997-05-01), None
patent: 2000-298836 (1999-04-01), None
U.S. Appl. No. 10/643,975, filed Aug. 20, 2003, Minemura.
Naoki Ide, “Adaptive Partial-Response Maximum-Likelihood Detection in Optical Recording Media”, Technical Digest of ISOM 2002, pp. 269-271.
Minemura Hiroyuki
Mukoh Masaki
A. Marquez, Esq. Juan Carlos
Danielsen Nathan A
Hitachi , Ltd.
Hitachi-LG Data Storage, Inc.
Stites & Harbison PLLC
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