Precise Write-Time Compensation for Nonlinear Transition Shift in Magnetic Tape Recording Using a <I>d</I>=1 RLL Code

Toshihiro UEHARA; Keigo MAJIMA; Shoichiro OGAWA; Junji NUMAZAWA

Precise Write-Time Compensation for Nonlinear Transition Shift in Magnetic Tape Recording Using a d=1 RLL Code

Toshihiro UEHARA, Keigo MAJIMA, Shoichiro OGAWA, Junji NUMAZAWA

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We propose precise write-time compensation for nonlinear transition shift in magnetic tape recording using d=1 runlength-limited (RLL) code as a channel modulation. In this write-time compensation approach, the write current transitions having a transition within 3 bits earlier are shifted so as to minimize the transition shift of the readback signal. First, we precisely measured the nonlinear transition shift using a VCR. Next, based on this measurement, we simulated the effects of the write-time compensation, verifying them in recording experiments with a VCR. The results show that when the optimum read equalization is applied to the readback signal, this write-time compensation approach increases the eye height and eye width while improving the byte error rate by about two orders.

Publication: IEICE TRANSACTIONS on Electronics Vol.E82-C No.12 pp.2234-2240

Publication Date: 1999/12/25

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Type of Manuscript: Special Section PAPER (Special Issue on Information Storage Technologies for the 21st Century)

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Toshihiro UEHARA, Keigo MAJIMA, Shoichiro OGAWA, Junji NUMAZAWA, "Precise Write-Time Compensation for Nonlinear Transition Shift in Magnetic Tape Recording Using a d=1 RLL Code" in IEICE TRANSACTIONS on Electronics, vol. E82-C, no. 12, pp. 2234-2240, December 1999, doi: .
Abstract: We propose precise write-time compensation for nonlinear transition shift in magnetic tape recording using d=1 runlength-limited (RLL) code as a channel modulation. In this write-time compensation approach, the write current transitions having a transition within 3 bits earlier are shifted so as to minimize the transition shift of the readback signal. First, we precisely measured the nonlinear transition shift using a VCR. Next, based on this measurement, we simulated the effects of the write-time compensation, verifying them in recording experiments with a VCR. The results show that when the optimum read equalization is applied to the readback signal, this write-time compensation approach increases the eye height and eye width while improving the byte error rate by about two orders.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e82-c_12_2234/_p

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@ARTICLE{e82-c_12_2234,
author={Toshihiro UEHARA, Keigo MAJIMA, Shoichiro OGAWA, Junji NUMAZAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Precise Write-Time Compensation for Nonlinear Transition Shift in Magnetic Tape Recording Using a d=1 RLL Code},
year={1999},
volume={E82-C},
number={12},
pages={2234-2240},
abstract={We propose precise write-time compensation for nonlinear transition shift in magnetic tape recording using d=1 runlength-limited (RLL) code as a channel modulation. In this write-time compensation approach, the write current transitions having a transition within 3 bits earlier are shifted so as to minimize the transition shift of the readback signal. First, we precisely measured the nonlinear transition shift using a VCR. Next, based on this measurement, we simulated the effects of the write-time compensation, verifying them in recording experiments with a VCR. The results show that when the optimum read equalization is applied to the readback signal, this write-time compensation approach increases the eye height and eye width while improving the byte error rate by about two orders.},
keywords={},
doi={},
ISSN={},
month={December},}

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TY - JOUR
TI - Precise Write-Time Compensation for Nonlinear Transition Shift in Magnetic Tape Recording Using a d=1 RLL Code
T2 - IEICE TRANSACTIONS on Electronics
SP - 2234
EP - 2240
AU - Toshihiro UEHARA
AU - Keigo MAJIMA
AU - Shoichiro OGAWA
AU - Junji NUMAZAWA
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E82-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 1999
AB - We propose precise write-time compensation for nonlinear transition shift in magnetic tape recording using d=1 runlength-limited (RLL) code as a channel modulation. In this write-time compensation approach, the write current transitions having a transition within 3 bits earlier are shifted so as to minimize the transition shift of the readback signal. First, we precisely measured the nonlinear transition shift using a VCR. Next, based on this measurement, we simulated the effects of the write-time compensation, verifying them in recording experiments with a VCR. The results show that when the optimum read equalization is applied to the readback signal, this write-time compensation approach increases the eye height and eye width while improving the byte error rate by about two orders.
ER -