Inventor
SEO YOSUKE
JP18 patents
⚠️ This page may combine multiple inventors who share the name “SEO YOSUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
17 patentsUS6590729B1Jul 8, 2003
Magnetic disk drive with servo signal decoder using amplitude detection and phase detection system
HITACHI LTD63 citations96
US6286108B1Sep 4, 2001
Disk system and power-on sequence for the same
HITACHI LTD27 citations96
US6131142AOct 10, 2000
Disk system and power-on sequence for the same
HITACHI LTD49 citations96
US6012124AJan 4, 2000
Disk system with activation control of disk drive motors
HITACHI LTD56 citations96
US5673412ASep 30, 1997
Disk system and power-on sequence for the same
HITACHI LTD38 citations96
US5568331AOct 22, 1996
Method of head positioning and magnetic recording disk drive using the same
HITACHI LTD67 citations96
US5193034AMar 9, 1993
Magnetic disk apparatus of constant-density recording type, magnetic disk used therefor and servo-writing device for patterning on the magnetic disk
HITACHI LTD75 citations96
US4651242AMar 17, 1987
Magnetic disk apparatus
HITACHI LTD54 citations95
US5572699ANov 5, 1996
Variable length data in a parallel disk array
HITACHI LTD33 citations92
US6625690B2Sep 23, 2003
Disk system and power-on sequence for the same
HITACHI LTD8 citations74
US5325364AJun 28, 1994
Method for error correction and circuit for realizing same
HITACHI LTD9 citations74
US5132854AJul 21, 1992
High speed seek sector servo magnetic disk drive unit
HITACHI LTD19 citations74
US5748398AMay 5, 1998
Method for writing servo signals onto a magnetic disk and magnetic disk drive equipped with magnetic disk(s) having servo pattern recorded by the method
HITACHI LTD15 citations73
US5548454AAug 20, 1996
Information recording disk, its production method and recording apparatus
HITACHI LTD18 citations73
US4707755ANov 17, 1987
Optical read-out magnetic head
HITACHI LTD8 citations73
US4851939AJul 25, 1989
Actuator driving apparatus and magnetic disk drive system with a smaller number of high power amplifiers than actuators
HITACHI LTD7 citations71
US7242656B2Jul 10, 2007
Disk system and power-on sequence for the same
HITACHI LTD2 citations63