文章基本信息

标题：垂直磁気記録における非線形転移点シフトの記録密度依存性
本地全文：下载
作者：村岡裕明 ; 中村慶久
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：1998
卷号：52
期号：10
页码：1480-1484
DOI：10.3169/itej.52.1480
出版社：The Institute of Image Information and Television Engineers
摘要：Nonlinearity of perpendicular magnetic recording using a single-pole writing head and an MR head associated with a double layered medium was investigated by the dipulse echo extraction method up to 300 kFRPI and a simulation The nonlinear transition shift (NLTS) was 6% of bit length even in 300 kFRPI The NLTS in length was gradually decreases according to the density increment The NLTS was measured for the condition of less than-40 dB overwrite, thus, no influence of head saturation was confirmed This result was well agree with the proven high recording resolution of perpendicular magnetic recording By investigation based on the simulation, the shape of the extracted echo for the perpendicular head/medium showed that it consisted not only of NLTS by one bit prior, but also of slight width change of the proceeding pulse by a preceding transition Through this study, perpendicular magnetic recording with an head showed good linearity which was suitable for recent signal processing for high density recording
关键词：垂直磁気記録;非線形性;転移点シフト;擬似ランダム系列