2020•Applied SciencesOpen access

Modulation Code for Reducing Intertrack Interference on Staggered Bit-Patterned Media Recording

Seongkwon Jeong, Jaejin Lee

Abstract

A bit-patterned media recording (BPMR) system is a type of ultrahigh-capacity magnetic storage system that can extend to an areal density of 1 terabit per square inch or higher. However, because the space between islands in the down- and cross-track directions is reduced to extend the areal density, the effect of two-dimensional interference is increased. However, using a staggered array, which is one of the possible island distributions for BPMR, helps to decrease intertrack interference. A 7/10 modulation code for a staggered BPMR is proposed to avoid the effect of two-dimensional interference and provide distance among nonidentical codewords for improving the correcting capability.

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Key concepts: Patterned media, Terabit, Interference (communication), Area density, Modulation (music), Computer science, Bit (key), Code (set theory)