翻訳と辞書 Words near each other ・ Perranporth ・ Perranporth Airfield ・ Perranuthnoe ・ Perranwell railway station ・ Perpend stone ・ Perpendicular ・ Perpendicular (disambiguation) ・ Perpendicular axis theorem ・ Perpendicular bisector construction ・ Perpendicular bisector construction of a quadrilateral ・ Perpendicular distance ・ Perpendicular plate ・ Perpendicular plate of ethmoid bone ・ Perpendicular plate of palatine bone ・ Perpendicular Point ・ Perpendicular recording ・ Perper ・ Perper (band) ・ Perperek ・ Perperek Knoll ・ Perperene ・ Perperikon ・ PerperiyanKuppam ・ Perpessicius ・ Perpetration-induced traumatic stress ・ Perpetua (disambiguation) ・ Perpetua (typeface) ・ Perpetua and Felicity ・ Perpetua Nkwocha ・ Perpetual Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Perpendicular recording ： ウィキペディア英語版 Perpendicular recording Perpendicular recording (or Perpendicular Magnetic Recording, PMR) is a technology for data recording on hard disks. It was first proven advantageous in 1976 by Shun-ichi Iwasaki, then professor of the Tohoku University in Japan, and first commercially implemented in 2005. The first industry-standard demonstration showing unprecedented advantage of PMR over longitudinal magnetic recording (LMR) at nanoscale dimensions was made in 1998 at IBM Almaden Research Center in collaboration with researchers of Data Storage Systems Center (DSSC) – a National Science Foundation (NSF) Engineering Research Center (ERCs) at Carnegie Mellon University (CMU).〔S. Khizroev, M. Kryder, Y. Ikeda, K. Rubin, P. Arnett, M. Best, D. A. Thompson, “Recording heads with trackwidths suitable for 100 Gbit/in2 density, “IEEE Trans. Magn., 35 (5), 2544-6 (1999)()〕 ==Advantages== Perpendicular recording can deliver more than three times the storage density of traditional longitudinal recording. Perpendicular recording was first used by Toshiba in 3.5" floppy disks in 1989〔(【引用サイトリンク】title=Introduction to the 82077, Floppy Disk Controller )〕 to permit 2.88 MB of capacity (ED or extended density), but they failed to succeed in the marketplace. Since about 2005 the technology has come into use for hard disk drives.〔(2008 review of drives with perpendicular recording. )〕 Hard disk technology with longitudinal recording has an estimated limit of 100 to 200 gigabit per square inch due to the superparamagnetic effect, though this estimate is constantly changing. Perpendicular recording is predicted to allow information densities of up to around 1 Tbit/sq. inch (1000 Gbit/sq. inch).〔(Hitachi News Release - Hitachi achieves nanotechnology milestone for quadrupling terabyte hard drive )〕 drives with densities of 667Gb/in2 were available commercially, and there have been perpendicular recording demonstrations of 800-900Gb/in2.〔(Conceivably Tech: Hard Drives Get New Record Density.I )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Perpendicular recording」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.