Inventor
TSUCHIYA REIJIRO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TSUCHIYA REIJIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
11 patentsUS6111715AAug 29, 2000
Storage apparatus using a magnetoresistive head that employs a sense current selected from plural predetermined sense currents
HITACHI LTD44 citations96
US4907100AMar 6, 1990
Readout circuit in magnetic recording device
HITACHI LTD24 citations91
US6130797AOct 10, 2000
Magnetic recorder and magnetooptical recorder
HITACHI LTD16 citations84
US5786952AJul 28, 1998
Magnetic digital storage method and system wherein magnetic transition points in adjacent recorded tracks are out of phase with each other
HITACHI LTD8 citations74
US5008761AApr 16, 1991
Readout circuit in magnetic recording device
HITACHI LTD10 citations74
US6657804B1Dec 2, 2003
Magnetic recording disk drive
HITACHI LTD7 citations73
US6512648B1Jan 28, 2003
Magnetic storage apparatus using a magnetoresistive element
HITACHI LTD7 citations73
US6285520B1Sep 4, 2001
Magnetic disk device and automatic adaptation method of its parameter
HITACHI LTD7 citations68
US5459620AOct 17, 1995
Diagnostic system of magnetic recording channel and magnetic disk drive apparatus
HITACHI LTD5 citations62
US4823208AApr 18, 1989
Multi slice level signal circuit
HITACHI LTD5 citations62
US6452737B2Sep 17, 2002
Magnetic disk device and automatic adaptation method of its parameter
HITACHI LTD2 citations57
HITACHI GLOBAL STORAGE TECH
4 patentsUS7271970B2Sep 18, 2007
Composite magnetic head arranged so the reproducing elements do not overlap a pole of a recording element
HITACHI GLOBAL STORAGE TECH23 citations92
US6765740B2Jul 20, 2004
Composite magnetic head, magnetic disk drive using the head, and control method for the magnetic disk
HITACHI GLOBAL STORAGE TECH27 citations92
US6879460B2Apr 12, 2005
Magnetic recording disk drive
HITACHI GLOBAL STORAGE TECH4 citations62
US6816344B2Nov 9, 2004
Composite magnetic head arranged so the reproducing elements do not overlap a pole of a recording element
HITACHI GLOBAL STORAGE TECH0 citations51