Detection of slider-disk interference using a dynamic...

Electricity: measuring and testing – Magnetic – Magnetic information storage element testing

Reexamination Certificate

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C360S077080, C324S210000

Reexamination Certificate

active

06989671

ABSTRACT:
A method is described for calculating head disk interference (HDI) using a dynamic parametric test. In one embodiment, HDI is calculated based on an actual and ideal sensitivity profile based on a read-back signal track profile for the slider/head.

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“Sensitive Magnetic Head-Disk Spacing Measurements in Recording Drives,” Novotny et al. IEEE Tran. Magn. vol. 34, No., 4 Jul. 1998 pp. 1762-1764.
“Flying Height Measurement while Seeking in Hard Disk Drives,”Schardt et al., IEEE Tran. Magn. vol. 34, No. 4, Jul. 1998, pp. 1765-1767.

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