Inter-track orthogonal coding for ultra high track density recording

Author

Honda, Naoki ; Kikawada, Atsushi ; Ouchi, Kazuhiro ; Iwasaki, Shun-ichi

Author_Institution

Akita Res. Inst. of Adv. Technol., Japan

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3099

Lastpage

3101

Abstract

New inter-track orthogonal coding for high track density and multi-track recording is proposed. Two data code sequences are modulated by 2nd order Hadamard matrix elements so that they are orthogonal each other. The coding method exhibits an absolutely high rejection efficiency against cross talk noise from adjacent tracks, indicating feasibility not only of high track density recording but of collective reading of multi-track channel signals. It is expected from simulation results that an ultra high track density recording with neither guard-band nor azimuth between adjacent tracks would be possible for all kinds of information recording using sequential tracking

Keywords

channel coding; crosstalk; digital magnetic recording; modulation coding; 2nd order Hadamard matrix elements; NRZI coding; RZ coding; adjacent tracks; crosstalk noise rejection; data code sequences; inter-track orthogonal coding; multi-track recording; multitrack channel signals; sequential tracking; ultra high track density recording; Azimuth; Clocks; Decoding; Disk recording; Error correction; Error correction codes; Interference; Magnetic heads; Video recording; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490282

Filename

490282