Method for laying out an adaptive zone of a hard disk drive

Details Method for laying out an adaptive zone of a hard disk drive Method for laying out an adaptive zone of a hard disk drive

1997-06-30

2000-05-30

Burgess, Glenton B.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

G11B 509

Patent

active

060697598

ABSTRACT:
A method for laying out an adaptive zone of a hard disk drive adopting a partial response signalling and maximum likelihood (PRML) detection comprises the steps of obtaining a pulse width by reading an isolated pulse written on a disk as a recording medium, obtaining a channel bit period by calculating the ratio between the channel density according to PRML and the pulse width, and selecting the optimum zone data rate from a zone table to record it on a memory.

REFERENCES:
patent: 4799112 (1989-01-01), Bremmer et al.
patent: 5535186 (1996-07-01), Ishizawa
patent: 5543978 (1996-08-01), Park
patent: 5563746 (1996-10-01), Bliss
patent: 5585975 (1996-12-01), Bliss
patent: 5768320 (1998-06-01), Kovacs et al.
patent: 5822142 (1998-10-01), Hicken
IEEE Transactions on Magnetics, Vo. 29, No. 6, Nov. 1993, pp. 4021-4023.

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