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Write Pre-Compensation Algorithm for High Linear Density Magnetic Recording

IP.com Disclosure Number: IPCOM000036957D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue

IBM

Related People

Authors:
Kurachi, K Matsui, T Tobari, A [+details]

Abstract

Disclosed is an algorithm for the compensation of a bit-shift in a magnetic recording process. The purpose of a conventional pre-compensation algorithm is only to cancel the bit shift due to inter- symbol interference in a read process. However, the new algorithm disclosed herein can compensate the bit shift not only in the read process but also in the write process. The bit shift in the write process is a position shift of a magnetic transition written on a disk. This is caused by an interaction between a head field and a transition field.