Zobrazeno 1 - 10
of 20
pro vyhledávání: '"W.F. Oehme"'
Publikováno v:
Journal of Magnetism and Magnetic Materials. 193:455-457
A method has been developed and applied which allows to analyze the contribution of individual transitions in an arbitrary data pattern to media noise. Distortions as displacement, amplitude, and width variation of pulses have been investigated. In a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da20e5cd6ab9445cb7d09f9355d48826
https://doi.org/10.1016/s0304-8853(98)00522-8
https://doi.org/10.1016/s0304-8853(98)00522-8
Publikováno v:
IEEE Transactions on Magnetics. 34:1934-1936
In this work, a new approach to detection in high density magnetic recording is presented. The basic detector structure is a bank of parallel sub-detectors which are specialized in different channel states. The individual adaptation of the sub-detect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6715e5f28912d8eed801368e56ee2bed
https://doi.org/10.1109/20.706748
https://doi.org/10.1109/20.706748
Publikováno v:
IEEE Transactions on Magnetics. 33:2794-2796
As recording density rises read signals are increasingly distorted by nonlinear intersymbol interference (ISI). Against this background an artificial neural network with a new decision making scheme has been set up and trained to work as a detector.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a18673b9a005558f5b830d6d0ba0d54
https://doi.org/10.1109/20.617733
https://doi.org/10.1109/20.617733
Publikováno v:
1997 IEEE International Magnetics Conference (INTERMAG'97).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2493ef7fc2a0bdc9c05e165da8dd6de
https://doi.org/10.1109/intmag.1997.597632
https://doi.org/10.1109/intmag.1997.597632
Autor:
F. Obernosterer, W.F. Oehme
Publikováno v:
Journal of Magnetism and Magnetic Materials. 155:338-340
The effect of media noise on pulse amplitude and pulse shape variation has been investigated at a thin film disk drive. In a new approach total amplitude noise is divided into a reproducible (deterministic) part and a random part. At higher pulse int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::159e9e19f7dcaf486f49e22bf1c3bd55
https://doi.org/10.1016/0304-8853(95)00701-6
https://doi.org/10.1016/0304-8853(95)00701-6
Autor:
W.F. Oehme, K. Enk
Publikováno v:
IEEE Transactions on Magnetics. 30:948-950
The algorithm of a new two step detection scheme is described. The performance of the detection scheme has been evaluated by means of read signals from a prototype thin film disk drive with PW50/T greater than three. The detection procedure is divide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27e05f0ffc3c441f688d43404e7b6431
https://doi.org/10.1109/20.312455
https://doi.org/10.1109/20.312455
Autor:
W.F. Oehme, J. Basig
Publikováno v:
IEEE Transactions on Magnetics. 26:207-209
A model with linear pulse superposition and nonlinear pulse displacement is suggested for the magnetic recording system. The isolated read pulse is assumed as definite system response to the write current transition. The pulse displacements have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd90de6b08e1bb3491632ebb9cb3b2fc
https://doi.org/10.1109/20.50535
https://doi.org/10.1109/20.50535
Autor:
N. Wei, W.F. Oehme
Publikováno v:
International Conference on Storage and Recording Systems.
The noise portion of the read signal of a helical scan tape recorder has been separated into multiplicative noise and additive noise. Additive noise is further split into medium correlated and medium uncorrelated parts which are particle noise, rubbi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0aecdbee4cce1ef01be058231b5ecca9
https://doi.org/10.1049/cp:19941135
https://doi.org/10.1049/cp:19941135
Publikováno v:
[1993] Digests of International Magnetics Conference.
A modified helical scan tape recorder was used for experimental digital recording. Demodulation was carried out using MLSE (maximum-likelihood sequence-estimation) with the Viterbi algorithm. Clock recovery is included in the estimation algorithm. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a6b442ca447086c9f5402e914bcb1b7
https://doi.org/10.1109/intmag.1993.642695
https://doi.org/10.1109/intmag.1993.642695
Publikováno v:
IEEE Transactions on Magnetics. 24:1814-1816
A single/double-density burst switching test pattern is used for the measurement of peak shift. Recording experiments with densities in the range of 1000 to 4000 flux reversals per millimeter have been carried out for oxide- and metal-particle media.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::971d2fe74046bd028c826a4aed198948
https://doi.org/10.1109/20.11611
https://doi.org/10.1109/20.11611