DocumentCode
1063283
Title
Biased run-length limited modulation [for magnetic recording]
Author
Weathers, A.D. ; Wolf, J.K.
Author_Institution
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Volume
27
Issue
6
fYear
1991
fDate
11/1/1991 12:00:00 AM
Firstpage
4807
Lastpage
4809
Abstract
An interpretation for controlled polarity modulation that allows the write waveforms to be generated using a standard run-length limited modulator is presented. The output of the run-length limited modulator passes through a digital filter and is then shifted up in frequency via amplitude modulation. This resultant signal has a bias signal added to complete the process. The algorithm is demonstrated using a (2,7) constraint that is modified in a way that allows a peak detector to be used during the reading process
Keywords
digital filters; equalisers; magnetic recording; modulation; signal processing; algorithm; amplitude modulation; bias signal; biased modulation; controlled polarity modulation; digital filter; magnetic recording; peak detector; run-length limited modulator; write equalisation; write waveforms; Amplitude modulation; Boosting; Control systems; Digital filters; Digital modulation; Frequency; Magnetic modulators; Magnetic recording; Modulation coding; Predictive models;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.278953
Filename
278953
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