Reproducing device and method of removing noise

Details Reproducing device and method of removing noise Reproducing device and method of removing noise

2006-06-27

2006-06-27

Patel, Gautam R. (Department: 2656)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S059220

Reexamination Certificate

active

07068573

ABSTRACT:
For reproducing data, a first read signal from a main track is filtered and second read signals from tracks adjacent to the main track are filtered. A cross-modulation component included in a third read signal from the main track is removed by calculating an estimated value of cross-modulation for the main track by multiplying the filtered first read signal by the filtered second read signals and by subtracting the estimated value from the third read signal. A crosstalk component caused by the adjacent tracks included in a fourth read signal from the main track is removed by obtaining the crosstalk component by filtering the second read signals and by subtracting the crosstalk component from the fourth read signal.

REFERENCES:
patent: 6307823 (2001-10-01), Kobayashi
patent: 6370092 (2002-04-01), Araki et al.
patent: 6442114 (2002-08-01), Ishibashi et al.
patent: 6614745 (2003-09-01), Takeda et al.
patent: 6661761 (2003-12-01), Hayami et al.
patent: 6836456 (2004-12-01), Tonami

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