Performance evaluation method of an MR head and a magnetic disk

Details Performance evaluation method of an MR head and a magnetic disk Performance evaluation method of an MR head and a magnetic disk

1998-09-29

2000-12-05

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data verification

G11B 509

Patent

active

061575070

ABSTRACT:
A performance evaluation method of an MR head whereby resolution performance of an MR head can be estimated, an isolated repreoduction wave form V(t) of the MR head is approximated by an equation V(t)=1/(1+(2t/PW50).sup.P), t denoting time difference from a timing which gives a peak value of the isolated reproduction wave form V(t), and PW50 denoting a half-peak-width where the isolated reproduction wave form V(t) shows more than 50% of the peak value. The resolution performance of the MR head is evaluated according to the order value P of the above equation which gives the most likelihood approximation of the isolated wave form, together with the half-peak-width PW50 relative to a minimum bit-interval to be reproduced by the MR head.

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