5-1 High Recording Density Technologies on Particulate Magnetic Tape

High Density Pcm Magnetic Tape Recording

The Bell & Howell Enhanced-NRZ recording reproducing technique for bit packing densities up to 40,000 per track inch is described in this paper. Utilization of the pulse code modulation format of Enhanced-NRZ achieves this high density with a bit error rate of one in ten million. Bell & Howell’s standard VR-3700B instrumentation tape recorder and wideband instrumentation recording tape are used...

Gb/in Recording Areal Density on Sputtered Magnetic Tape

Simeon FURRER, Mark A. LANTZ, Peter REININGER, Angeliki PANTAZI, Hugo E. ROTHUIZEN, Roy D. CIDECIYAN, Giovanni CHERUBINI, Walter HAEBERLE, Evangelos ELEFTHERIOU, Junichi TACHIBANA, Noboru SEKIGUCHI, Takashi AIZAWA, Tetsuo ENDO, Tomoe OZAKI, Teruo SAI, Ryoichi HIRATSUKA, Satoshi MITAMURA and Atsushi YAMAGUCHI 1) IBM Research Zurich, CH-8803 Rueschlikon, Switzerland 2) Sony Storage Media Solution...

Magnetic tape recording electrocardiograph.

R ECORDING the electrocardiogram for prolonged intervals presents difficulties from the standpoint of economy and convenience. One 200 foot roll of paper for a direct writing instrument is used in 40 minutes of continuous recording at 25 mm. per second, and reviewing this long electrocardiographic record is a cumbersome procedure. A convenient method of recording electrocardiograms and fied ele...

Reduced-Complexity Turbo Equalization for High-Density Magnetic Recording Systems

This paper considers a decision-feedback-equalizer (DFE)-based soft decision detector as an alternative for the Bahl–Cocke–Jelinek–Raviv (BCJR) front-end for a coded magnetic recording channel. In previous work, a bidirectional-arbitrated DFE (BAD) was shown to perform in between a BCJR detector and a minimum mean-square error DFE. We propose a soft-output BAD (S-BAD) which takes advantage of t...

FePt:SiO2 granular thin film for high density magnetic recording