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Proceedings Paper

Design methodology for high-density read equalization
Author(s): Richard C. Schneider
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Paper Abstract

As magnetic recording linear densities increase, more bits are packed per inch along the individual tracks. The resulting high linear densities result in read signals that overlap each other. This is called inter symbol interference or ISI. The distortions in read signal shape due to ISI can be corrected by a linear electronic filter on the read side. This filter is called a read- equalizer. The read equalizer function is not unlike an audio equalizer that enhances audio performance at certain frequencies, or an optical lens that improves visual clarity by correcting for distortions of the human eye. This paper outlines an organized approach to the design of real equalizers used in high density digital magnetic recording on either tape or disks. This approach is also applicable to optical disk or tape applications, and in general to any digital data communication system.

Paper Details

Date Published: 15 January 1996
PDF: 10 pages
Proc. SPIE 2604, High-Density Data Recording and Retrieval Technologies, (15 January 1996); doi: 10.1117/12.230057
Show Author Affiliations
Richard C. Schneider, Storage Technology Corp. (United States)

Published in SPIE Proceedings Vol. 2604:
High-Density Data Recording and Retrieval Technologies
Ted A. Schwarz; Martin Francis, Editor(s)

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