Inventor
TOMITA ISAMU
JP26 patents
⚠️ This page may combine multiple inventors who share the name “TOMITA ISAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
22 patentsUS7492543B2Feb 17, 2009
Control device, control method, and storage apparatus for controlling read head and write head clearance
FUJITSU LTD25 citations92
US6295175B1Sep 25, 2001
Apparatus for recognizing spin valve head failure due to pin layer magnetic field offset
FUJITSU LTD38 citations92
US6175459B1Jan 16, 2001
Magnetic disk drive with a disk medium defect detector and read channel IC used in the drive
FUJITSU LTD47 citations92
US6130793AOct 10, 2000
Thermal asperity detection method, thermal asperity compensation method, magnetic disk unit and retry method therefor
FUJITSU LTD37 citations92
US6064541AMay 16, 2000
Servo pattern writing method for magnetic disk drives, and magnetic disk drive adopting the method
FUJITSU LTD20 citations92
US5903411AMay 11, 1999
Method for reliably positioning a head in a disk drive to a guard band area
FUJITSU LTD21 citations92
US5754354AMay 19, 1998
Magnetic disk drive unit with complex magnetic head of variable reading width
FUJITSU LTD20 citations92
US5721838AFeb 24, 1998
Data storage system having a data storage apparatus connectable to a computer system through an interface
FUJITSU LTD25 citations92
US5625777AApr 29, 1997
Data storage system having plural external storage units capable of disconnection while keeping system power energized
FUJITSU LTD32 citations92
US6690538B1Feb 10, 2004
Disk drive device and access sequence therefor
FUJITSU LTD15 citations84
US7002769B2Feb 21, 2006
Head control method and recording apparatus
FUJITSU LTD10 citations73
US5926337AJul 20, 1999
Off-track correcting method of disk apparatus and a disk apparatus using the same
FUJITSU LTD13 citations73
US7136245B2Nov 14, 2006
Disk device
FUJITSU LTD8 citations71
US6219722B1Apr 17, 2001
Head IC and recording apparatus
FUJITSU LTD6 citations63
US5907449AMay 25, 1999
Position sunsitivity adjusting method for disk apparatus and a disk apparatus using the same
FUJITSU LTD3 citations63
US5805373ASep 8, 1998
Head position error compensation in disk drives
FUJITSU LTD4 citations62
US7050250B2May 23, 2006
Storage apparatus and storage medium
FUJITSU LTD4 citations61
US7289287B2Oct 30, 2007
Apparatus for recording or/and reproducing information and method for reducing power consumption thereof
FUJITSU LTD2 citations60
US7561371B2Jul 14, 2009
Magnetic disk device, servo-information writing device, magnetic disk, and magnetic disk device manufacturing method
FUJITSU LTD1 citations52
US7420765B2Sep 2, 2008
Seek control apparatus, seek control method and storage apparatus
FUJITSU LTD1 citations52
US7522364B2Apr 21, 2009
Control circuit for information storage device
FUJITSU LTD0 citations49
US7196865B2Mar 27, 2007
Recording apparatus having discoid record mediums
FUJITSU LTD0 citations41