Signal processing technologies for high-density digital magnetic recording.
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| Název: | Signal processing technologies for high-density digital magnetic recording. |
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| Autoři: | Hisaki Osawa1, Yoshihiro Okamoto1, Hidetoshi Saito1 |
| Zdroj: | Electronics & Communications in Japan, Part 2: Electronics. Jun99, Vol. 82 Issue 6, p25-45. 21p. |
| Témata: | *SIGNAL processing, *MAGNETIC recorders & recording, *DIGITAL electronics, *CODING theory, *ESTIMATION theory, *ELECTRIC distortion |
| Abstrakt: | Recently, the demand for higher density digital recording has been increasing steadily. In this article, focusing on digital magnetic recording devices, such as magnetic disks and digital VTRs, a signal processing technique for achieving higher densities is described. First, the partial response system, Viterbi decoding method, and partial response maximum likelihood (PRML) system are described in detail. Next, various signal processing methods extensively studied in recent years for longitudinal magnetic recording are described. Recent research trends in signal processing methods responsive to nonlinear distortions, with allowance for nonlinear distortions, such as partial erasure as factors promoting error rate degradation in high-density recording, are discussed. The performances of various methods are compared. A signal processing method for vertical magnetic recording expected to be a promising technique for future high density recording is described. ©1999 Scripta Technica, Electron Comm Jpn Pt 2, 82(6): 25–45, 1999 [ABSTRACT FROM AUTHOR] |
| Databáze: | Academic Search Index |
Nájsť tento článok vo Web of Science | Abstrakt: | Recently, the demand for higher density digital recording has been increasing steadily. In this article, focusing on digital magnetic recording devices, such as magnetic disks and digital VTRs, a signal processing technique for achieving higher densities is described. First, the partial response system, Viterbi decoding method, and partial response maximum likelihood (PRML) system are described in detail. Next, various signal processing methods extensively studied in recent years for longitudinal magnetic recording are described. Recent research trends in signal processing methods responsive to nonlinear distortions, with allowance for nonlinear distortions, such as partial erasure as factors promoting error rate degradation in high-density recording, are discussed. The performances of various methods are compared. A signal processing method for vertical magnetic recording expected to be a promising technique for future high density recording is described. ©1999 Scripta Technica, Electron Comm Jpn Pt 2, 82(6): 25–45, 1999 [ABSTRACT FROM AUTHOR] |
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| ISSN: | 8756663X |
| DOI: | 10.1002/(SICI)1520-6432(199906)82:6<25::AID-ECJB4>3.0.CO;2-0 |