Improvement of Read Back Properties in HDD with PRML Signal Processing Method
Summary :
A series of micromagnetic models including simulations of the 3D thin film write head field, the GMR read head, the thin film media and channel codes are utilized to study the recording performance in longitudinal hard disk drives (HDD) at extremely high densities. The (0, 4/4) encoder is utilized to translate the user data into (0, 4/4) constrained codes, before the write process is performed. The write current is achieved from the constrained code in the NRZ format. The read back voltage is reshaped to the PR-IV signal and the Viterbi detector is utilized to recover the data. In a medium of 10 nm grains, the recording linear density limits with the PRML method are about 1000 kfci, which is 1.5 times of those with the PD channel.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E86-C No.9 pp.1856-1860
- Publication Date
- 2003/09/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Issue on Recent Progress of High-Density Disk Storage)
- Category
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Xiaobing LIANG, Dan WEI, "Improvement of Read Back Properties in HDD with PRML Signal Processing Method" in IEICE TRANSACTIONS on Electronics,
vol. E86-C, no. 9, pp. 1856-1860, September 2003, doi: .
Abstract: A series of micromagnetic models including simulations of the 3D thin film write head field, the GMR read head, the thin film media and channel codes are utilized to study the recording performance in longitudinal hard disk drives (HDD) at extremely high densities. The (0, 4/4) encoder is utilized to translate the user data into (0, 4/4) constrained codes, before the write process is performed. The write current is achieved from the constrained code in the NRZ format. The read back voltage is reshaped to the PR-IV signal and the Viterbi detector is utilized to recover the data. In a medium of 10 nm grains, the recording linear density limits with the PRML method are about 1000 kfci, which is 1.5 times of those with the PD channel.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e86-c_9_1856/_p
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@ARTICLE{e86-c_9_1856,
author={Xiaobing LIANG, Dan WEI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Improvement of Read Back Properties in HDD with PRML Signal Processing Method},
year={2003},
volume={E86-C},
number={9},
pages={1856-1860},
abstract={A series of micromagnetic models including simulations of the 3D thin film write head field, the GMR read head, the thin film media and channel codes are utilized to study the recording performance in longitudinal hard disk drives (HDD) at extremely high densities. The (0, 4/4) encoder is utilized to translate the user data into (0, 4/4) constrained codes, before the write process is performed. The write current is achieved from the constrained code in the NRZ format. The read back voltage is reshaped to the PR-IV signal and the Viterbi detector is utilized to recover the data. In a medium of 10 nm grains, the recording linear density limits with the PRML method are about 1000 kfci, which is 1.5 times of those with the PD channel.},
keywords={},
doi={},
ISSN={},
month={September},}
Copy
TY - JOUR
TI - Improvement of Read Back Properties in HDD with PRML Signal Processing Method
T2 - IEICE TRANSACTIONS on Electronics
SP - 1856
EP - 1860
AU - Xiaobing LIANG
AU - Dan WEI
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E86-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2003
AB - A series of micromagnetic models including simulations of the 3D thin film write head field, the GMR read head, the thin film media and channel codes are utilized to study the recording performance in longitudinal hard disk drives (HDD) at extremely high densities. The (0, 4/4) encoder is utilized to translate the user data into (0, 4/4) constrained codes, before the write process is performed. The write current is achieved from the constrained code in the NRZ format. The read back voltage is reshaped to the PR-IV signal and the Viterbi detector is utilized to recover the data. In a medium of 10 nm grains, the recording linear density limits with the PRML method are about 1000 kfci, which is 1.5 times of those with the PD channel.
ER -
English
