Inventor
KAMO YOSHIHISA
JP49 patents
⚠️ This page may combine multiple inventors who share the name “KAMO YOSHIHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
45 patentsUS6625748B1Sep 23, 2003
Data reconstruction method and system wherein timing of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD31 citations96
US6286108B1Sep 4, 2001
Disk system and power-on sequence for the same
HITACHI LTD27 citations96
US6243824B1Jun 5, 2001
Array disk subsystem
HITACHI LTD62 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
US6000039ADec 7, 1999
Data reconstruction method and system wherein timing of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD28 citations96
US5941993AAug 24, 1999
Data reconstruction method and system wherein timing of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD35 citations96
US5673412ASep 30, 1997
Disk system and power-on sequence for the same
HITACHI LTD38 citations96
US5495572AFeb 27, 1996
Data reconstruction method and system wherein timing of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD31 citations96
US5463765AOct 31, 1995
Disk array system, data writing method thereof, and fault recovering method
HITACHI LTD70 citations96
US5402428AMar 28, 1995
Array disk subsystem
HITACHI LTD79 citations96
US7434095B2Oct 7, 2008
Data reconstruction method and system wherein timing of data of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD12 citations93
US5682396AOct 28, 1997
Control unit in storage subsystem with improvement of redundant data updating
HITACHI LTD26 citations93
US5457703AOct 10, 1995
Array disk system and control method thereof
HITACHI LTD23 citations93
US5084789AJan 28, 1992
"Parallel transfer type disk system"
HITACHI LTD24 citations93
US4807074AFeb 21, 1989
Magnetoresistive head for magnetic disk
HITACHI LTD29 citations93
US5574881ANov 12, 1996
High capacity data storage method and system using independently controlled heads and circuitry for monitoring access frequency of data records
HITACHI LTD28 citations92
US5572699ANov 5, 1996
Variable length data in a parallel disk array
HITACHI LTD33 citations92
US4802043AJan 31, 1989
Magneto-resistive head for protecting against output spike noises
HITACHI LTD48 citations92
US4663684AMay 5, 1987
Magnetic transducer using magnetoresistance effect
HITACHI LTD32 citations92
US5181149AJan 19, 1993
Magnetic recording/reproducing head assembly
HITACHI LTD32 citations91
US6611897B2Aug 26, 2003
Method and apparatus for implementing redundancy on data stored in a disk array subsystem based on use frequency or importance of the data
HITACHI LTD34 citations90
US6571314B1May 27, 2003
Method for changing raid-level in disk array subsystem
HITACHI LTD26 citations90
US5745771AApr 28, 1998
Disc array device and disc control method
HITACHI LTD24 citations90
US6161194ADec 12, 2000
Data reconstruction method and system wherein timing of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD12 citations82
US5917999AJun 29, 1999
Storage unit subsystem
HITACHI LTD13 citations82
US5889938AMar 30, 1999
Data reconstruction method and system wherein timing of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD12 citations82
US4816948AMar 28, 1989
Magneto-resistive head
HITACHI LTD20 citations82
US4716306ADec 29, 1987
Circuit for detecting variation of resistance of a variable-resistance element
HITACHI LTD21 citations82
US6625690B2Sep 23, 2003
Disk system and power-on sequence for the same
HITACHI LTD8 citations74
US6327673B1Dec 4, 2001
Storage unit subsystem
HITACHI LTD10 citations74
US6145091ANov 7, 2000
Storage unit subsystem
HITACHI LTD6 citations74
US5325364AJun 28, 1994
Method for error correction and circuit for realizing same
HITACHI LTD9 citations74
US5008761AApr 16, 1991
Readout circuit in magnetic recording device
HITACHI LTD10 citations74
US4814919AMar 21, 1989
Soft-film-bias type magnetoresitive device
HITACHI LTD7 citations74
US6397294B2May 28, 2002
Disk system and power-on sequence for the same
HITACHI LTD5 citations70
US7320089B2Jan 15, 2008
Storage unit subsystem
HITACHI LTD3 citations63
US7242656B2Jul 10, 2007
Disk system and power-on sequence for the same
HITACHI LTD2 citations63
US6532549B2Mar 11, 2003
Storage unit subsystem
HITACHI LTD3 citations63
US4600965AJul 15, 1986
Current driving circuit
HITACHI LTD5 citations63
US4821012AApr 11, 1989
Magnetoresistive element
HITACHI LTD5 citations62
US4222081ASep 9, 1980
Information reading device for a multitrack storage device
HITACHI LTD5 citations61
US6966011B2Nov 15, 2005
Data reconstruction method and system wherein timing of data of data reconstruction is controlled in accordance with conditions when a failure occurs
HITACHI LTD0 citations52
US6874101B2Mar 29, 2005
Storage unit subsystem
HITACHI LTD1 citations52
US6757839B2Jun 29, 2004
Storage unit subsystem
HITACHI LTD0 citations52