Rotated read head design for high-density heat-assisted shingled magnetic recording

2021 ◽  
Vol 118 (7) ◽  
pp. 072406
Author(s):  
Wei-Heng Hsu ◽  
R. H. Victora
Keyword(s):  
Magnetic Recording ◽  
High Density ◽  
Shingled Magnetic Recording ◽  
Read Head

Nonmagnetic semiconductors as read-head sensors for ultra-high-density magnetic recording

2002 ◽  
Vol 80 (21) ◽  
pp. 4012-4014 ◽  
Author(s):  
S. A. Solin ◽  
D. R. Hines ◽  
A. C. H. Rowe ◽  
J. S. Tsai ◽  
Yu. A. Pashkin ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
High Density ◽  
Read Head ◽  
High Density Magnetic Recording

Novel Development of Ultra-Fast and Ultra-High Density Magnetic Recording

2014 ◽  
Vol 134 (1) ◽  
pp. 26-29 ◽  
Author(s):  
Shinichiro Ohnuki ◽  
Katsuji Nakagawa ◽  
Yoshito Ashizawa ◽  
Arata Tsukamoto ◽  
Akiyoshi Itoh
Keyword(s):  
Magnetic Recording ◽  
High Density ◽  
High Density Magnetic Recording

Enabling Sequential-write-constrained B + -tree Index Scheme to Upgrade Shingled Magnetic Recording Storage Performance

2019 ◽  
Vol 18 (5s) ◽  
pp. 1-20
Author(s):  
Yu-Pei Liang ◽  
Tseng-Yi Chen ◽  
Yuan-Hao Chang ◽  
Shuo-Han Chen ◽  
Kam-Yiu Lam ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Storage Performance ◽  
Shingled Magnetic Recording ◽  
Tree Index

Head Instability Detection for Testing Process in Perpendicular Magnetic Recording System

2013 ◽  
Vol 770 ◽  
pp. 319-322 ◽  
Author(s):  
Piya Kovintavewat ◽  
Santi Koonkarnkhai ◽  
Aimamorn Suvichakorn
Keyword(s):  
Magnetic Recording ◽  
Signal To Noise Ratio ◽  
Disk Drive ◽  
Detection Algorithm ◽  
Recording System ◽  
High Signal ◽  
Signal To Noise ◽  
Perpendicular Magnetic Recording ◽  
Read Head ◽  
Pass Through

During hard disk drive (HDD) testing process, the magneto-resistive read (MR) head is analyzed and checked if the head is defective or not. Baseline popping (BLP) is one of the crucial problems caused by head instability, whose effect can distort the readback signal to the extent of causing possible sector read failure. Without BLP detection algorithm, the defective read head might pass through HDD assembling process, thus producing an unreliable HDD. This situation must be prevented so as to retain customer satisfaction. This paper proposes a simple (but efficient) BLP detection algorithm for perpendicular magnetic recording systems. Results show that the proposed algorithm outperforms the conventional one in terms of both the percentage of detection and the percentage of false alarm, when operating at high signal-to-noise ratio.

Signal Model for Shingled Magnetic Recording Based on Data Dependent Erase Band Analysis Under Track Squeeze

2013 ◽  
Vol 49 (2) ◽  
pp. 734-738 ◽  
Author(s):  
Euiseok Hwang ◽  
Ming Jin ◽  
Jongseung Park ◽  
Erich F. Haratsch ◽  
Ivana Djurdjevic ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Signal Model ◽  
Shingled Magnetic Recording

Heusler alloy based current-perpendicular-to-the-plane giant magnetoresistance heads for high density magnetic recording

2008 ◽  
Vol 103 (7) ◽  
pp. 07F533 ◽  
Author(s):  
Konstantin Nikolaev ◽  
Paul Anderson ◽  
Paul Kolbo ◽  
Dimitar Dimitrov ◽  
Song Xue ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Heusler Alloy ◽  
Giant Magnetoresistance ◽  
High Density ◽  
High Density Magnetic Recording
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