Software channel approach to data banding

Author

Arnett, P.C. ; Lam, D.

Author_Institution

IBM Almaden Res. Center, San Jose, CA, USA

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2324

Lastpage

2326

Abstract

A software channel is used to study the capacity gains made possible by data banding. Data banding increases the data rate in steps as the head moves from ID (inner diameter) to OD (outer diameter) to keep the linear bit density more nearly constant. The software channel is used for this experiment because of the ease in changing data rates and codes and optimizing other channel parameters for each band. The components studied are an MIG (metal-in-gap) head of 9.1-μm track width on a thin-film disk of 900-Oe coercivity. The projected gains in disk storage capacity using five data bands, an error-rate criterion for maximum data rate, and optimization of channel parameters for each band vary from 15% to 27% depending on code and the use of equalization

Keywords

hard discs; magnetic recording; capacity gains; coercivity; data banding; disk storage capacity; equalization; linear bit density; software channel; thin-film disk; Coercive force; Density measurement; Disk recording; Error analysis; Hardware; Magnetic heads; Magnetic recording; Sampling methods; Software testing; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104713

Filename

104713