Inventor
IWASHIRO MASAFUMI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “IWASHIRO MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
16 patentsUS7158334B2Jan 2, 2007
Method and apparatus for head positioning control with disturbance compensation in a disk drive
TOSHIBA KK12 citations83
US6934116B2Aug 23, 2005
Method and apparatus for head positioning control in a disk drive
TOSHIBA KK13 citations83
US6429996B1Aug 6, 2002
Method and apparatus for head-positioning control, for use in a disk drive
TOSHIBA KK14 citations83
US5847527ADec 8, 1998
Method and apparatus for digital position control
TOSHIBA KK12 citations73
US10553248B1Feb 4, 2020
Magnetic disk device and head position control method
TOSHIBA KK5 citations72
US10372375B2Aug 6, 2019
Magnetic disk device and command reordering method thereof
TOSHIBA KK1 citations62
US10217485B1Feb 26, 2019
Magnetic disc device and position control method
TOSHIBA KK1 citations62
US7221533B2May 22, 2007
Method and apparatus for servo information writing in a disk drive
TOSHIBA KK4 citations62
US7061710B2Jun 13, 2006
Method and apparatus for positioning a head in a disk drive with servo writing function
TOSHIBA KK4 citations62
US6940680B2Sep 6, 2005
Method and apparatus for head positioning control in disk drive
TOSHIBA KK6 citations62
US7423835B2Sep 9, 2008
Method and apparatus for servo control using spiral servo information in a disk drive
TOSHIBA KK5 citations59
US8817416B2Aug 26, 2014
Magnetic disk device and method of controlling magnetic heads
TOSHIBA KK1 citations52
US11996127B2May 28, 2024
Method for manufacturing disk device and computer program product
TOSHIBA KK0 citations51
US11875821B2Jan 16, 2024
Disk device
TOSHIBA KK0 citations51
US12462837B2Nov 4, 2025
Magnetic disk device and method
TOSHIBA KK0 citations43
US7173789B2Feb 6, 2007
Head position calculation method in magnetic disc apparatus
TOSHIBA KK0 citations41