Title :
A technique for measuring partial erasure
Author :
Nishida, Naoshi ; Yanoauchi, T.
Author_Institution :
Thin Films Lab., Mitsubishi Chem. Corp., Yokohama, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
A new technique for distinguishing partial erasure from nonlinear transition shift (NLTS) is presented for the case of a dibit. Experimental results obtained by using the method show that the partial erasure of a square wave is twice as large as that of a dibit. Calculation of NLTS using a first-order approximation is not correct at high recording densities
Keywords :
magnetic disc storage; maximum likelihood detection; partial response channels; NLTS; PRML; dibit; first-order approximation; nonlinear transition shift; partial erasure; recording densities; square wave; Detectors; Distortion measurement; Equalizers; Magnetic heads; Magnetic recording; Magnetic separation; Magnetostatic waves; Nonlinear distortion; Saturation magnetization; Shape;
Journal_Title :
Magnetics, IEEE Transactions on
