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フルテキストURLKJ00000156399.pdf ( 745.1KB ) 公開日 2010-04-19
タイトルディジタル形磁気記録の高密度干渉特性
タイトルヨミディジタルケイ ジキ キロク ノ コウミツド カンショウ トクセイ
タイトル別表記High Density Interference Characteristics in Digital Magnetic Recording
作成者西川, 正明
糸山, 喜勝
桐原, 昭雄
作成者ヨミニシカワ, マサアキ
イトヤマ, ヨシカツ
キリハラ, アキオ
作成者別表記Nishikawa, Masaaki
Itoyama, Yoshikatu
Kirihara, Akio
作成者所属山口大学工学部
内容記述(抄録等)The influences of medium parameters and recording level on the playback signal amplitude of high density digital magnetic recording have been experimentally examined. Several magnetic tapes with a thickness of 2.8 to 14μm were used for the experimental media. The playback signal amplitude from symmetrically recorded transition pattern was measured with varying recording transition density and recording current level. The transition density at which playback signal amplitude decreases to 50% of isolated signal amplitude, D_<50>, was noticed as a measure of overall resolution. The result of experiments can be summarized as follows : (i) The half amplitude density D_<50> is sensitive to recording current level in a thick medium, but this recording level dependency of D_<50> becomes less with decreasing medium thickness. (ii) The dependency of D_<50> on medium thickness δ can be approximately expressed as the form, D_<50>∽ δ^<-α>. The value of α depends on the recording level K. For example, α is about 0.8 and 0.3 for K is 2 and 0.5 respectively. (iii) As it can be expected from the superposing calculation of isolated playback pulses, D_<50> shows inversely proportional relationship to the half pulse width W_<50> of the isolated signal. The actual inversely proportional constant, however, somewhat differes from the calculated value.
本文言語jpn
主題電気電子工学
資料タイプtext
ファイル形式application/pdf
出版者山口大学工学部
出版者ヨミヤマグチ ダイガク コウガクブ
NII資料タイプ紀要論文
ISSN0372-7661
NCIDAN00244228
学内刊行物(紀要等)山口大学工学部研究報告
掲載誌名山口大学工学部研究報告
掲載誌名別表記Memoirs of the Faculty of Engineering, Yamaguchi University
32
1
開始ページ163
終了ページ172
発行日1981
著者版/出版社版出版社版
備考本文データは国立情報学研究所において電子化したものである
リポジトリIDKJ00000156399
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/KJ00000156399