Inventor
SAI FUMINORI
JP25 patents
⚠️ This page may combine multiple inventors who share the name “SAI FUMINORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI GLOBAL STORAGE TECH
15 patentsUS7019933B2Mar 28, 2006
Servo information write method, servo control method, data storage device, and program
HITACHI GLOBAL STORAGE TECH21 citations91
US7733591B2Jun 8, 2010
Data storage device with data recovery process using fixed phase clocking for analog-to-digital conversion
HITACHI GLOBAL STORAGE TECH26 citations90
US7489463B2Feb 10, 2009
Method of writing patterns using head with correct phases, and data storage device
HITACHI GLOBAL STORAGE TECH8 citations84
US7342735B2Mar 11, 2008
Method of writing patterns onto a recording disk, and data storage device
HITACHI GLOBAL STORAGE TECH17 citations84
US7486467B2Feb 3, 2009
Magnetic disk drive and method for registering defective sector using timing control of pattern writing
HITACHI GLOBAL STORAGE TECH11 citations83
US6643087B1Nov 4, 2003
Disk drive with improved retract circuit and method
HITACHI GLOBAL STORAGE TECH14 citations81
US7286316B2Oct 23, 2007
Method and data storage device for writing patterns onto recording disk
HITACHI GLOBAL STORAGE TECH8 citations73
US7646561B2Jan 12, 2010
Method of writing pattern in disk, method of following track on disk, and apparatus for writing pattern in disk
HITACHI GLOBAL STORAGE TECH7 citations72
US7457065B2Nov 25, 2008
Systems and methods for hard disk drive optimization and manufacturing
HITACHI GLOBAL STORAGE TECH2 citations63
US7023638B2Apr 4, 2006
Data storage device, data read correction mechanism, and data read control method
HITACHI GLOBAL STORAGE TECH5 citations62
US7446967B2Nov 4, 2008
Method of measuring head characteristics of a data storage device, and data storage device
HITACHI GLOBAL STORAGE TECH4 citations61
US7532424B2May 12, 2009
Method of writing pattern on media and data storage device
HITACHI GLOBAL STORAGE TECH6 citations59
US7525747B2Apr 28, 2009
Data storage device, data storage control circuit, and control method for magnetic disk drive
HITACHI GLOBAL STORAGE TECH5 citations58
US7724464B2May 25, 2010
Recording disk and disk drive
HITACHI GLOBAL STORAGE TECH5 citations57
US7697224B2Apr 13, 2010
Storing AD sampled data of read/write channel into ECC SRAM
HITACHI GLOBAL STORAGE TECH0 citations52
IBM
7 patentsUS6229663B1May 8, 2001
Disk drive loading/unloading apparatus and method for controlling the apparatus
IBM85 citations96
US6236527B1May 22, 2001
Disk drive with actuator load/unload controller
IBM109 citations95
US6078474AJun 20, 2000
Ramp for use with a data storage device and a data storage device
IBM30 citations92
US5266897ANov 30, 1993
Magnetic field observation with tunneling microscopy
IBM39 citations91
US5638203AJun 10, 1997
Liquid crystal electrooptical device
IBM13 citations74
US6424476B1Jul 23, 2002
Method and apparatus for controlling read and write operations in a storage device
IBM8 citations73
US6151183ANov 21, 2000
Disk drive device and method for controlling the same
IBM13 citations70