Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting
Reexamination Certificate
2005-07-26
2005-07-26
Ometz, David L. (Department: 2655)
Dynamic information storage or retrieval
Binary pulse train information signal
Including sampling or a/d converting
C369S047350, C369S047260, C369S059190, C369S059210
Reexamination Certificate
active
06922384
ABSTRACT:
An apparatus for reproducing information that has been digitally recorded on a storage medium includes first and second waveform equalizers. The first waveform equalizer equalizes a read signal, corresponding to the information read out from the storage medium, thereby outputting a first equalized signal. The second waveform equalizer has an equalization characteristic different from that of the first waveform equalizer, outputs a second equalized signal and is selectively used to extract a read clock signal.
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patent: WO 01/33568 (2001-05-01), None
Osawa et al., “Signal Processing Technologies For High Density Magnetic Recording”,Shingakuron, vol. J81-C-I, No. 4, pp. 195-214, (1998).
Furumiya Shigeru
Ishibashi Hiromichi
Minamino Jun-ichi
Miyashita Harumitsu
Nakao Masahito
Akin Gump Strauss Hauer & Feld & LLP
Ometz David L.
Ortiz-Criado J.
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