Enhanced dibit extraction

Details Enhanced dibit extraction Enhanced dibit extraction

2007-01-30

2007-01-30

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data verification

C360S046000

Reexamination Certificate

active

10877715

ABSTRACT:
A method for characterizing a read channel of a disk drive by storing a pseudorandom number (PN) sequence at a first location on a recording surface of the disk drive, and storing the PN sequence at a second location on the recording surface. The PN sequence at the first location is read to generate a first playback signal, and a first dibit response is determined from the first playback signal. The PN sequence at the second location is read to generate a second playback signal, and a second dibit response is determined from the first playback signal. The first and second dibit responses are arithmetically combined to generate a combined dibit response in which at least some non-linear echoes are isolated.

REFERENCES:
patent: 6208477 (2001-03-01), Cloke et al.
patent: 6292912 (2001-09-01), Cloke et al.
patent: 6636372 (2003-10-01), Nguyen et al.
patent: 6639748 (2003-10-01), Christiansen et al.
patent: 6731443 (2004-05-01), Bliss et al.
patent: 6788481 (2004-09-01), Fang et al.
Braun, Volker, Impulse Response Measurement of a Magnetic Recording Channel Using Golay Sequences, 6thBenelux-Japan Workshop, No Date, pp. 16.1-16.4.
Measurement Solutions for Disk Drive Design, Application Note, Tektronix, www.tektronix.com, 2002, pp. 16.

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