Inventor
SADO HIDEO
JP39 patents
⚠️ This page may combine multiple inventors who share the name “SADO HIDEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
37 patentsUS7639446B2Dec 29, 2009
Disk drive device and servo write method
TOSHIBA KK24 citations92
US7298576B2Nov 20, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK13 citations92
US7262932B2Aug 28, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK21 citations92
US7006322B2Feb 28, 2006
Method and apparatus for performing self-servo writing in a disk drive
TOSHIBA KK18 citations84
US7675705B2Mar 9, 2010
Method and apparatus for writing servo pattern using spiral pattern in disk drive
TOSHIBA KK14 citations83
US7477472B2Jan 13, 2009
Method and apparatus for writing servo data in a disk drive using spiral servo patterns
TOSHIBA KK13 citations83
US7639445B2Dec 29, 2009
Disk drive device and head positioning control method
TOSHIBA KK16 citations82
US7298579B2Nov 20, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK6 citations74
US7298582B2Nov 20, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK5 citations74
US7102840B2Sep 5, 2006
Disc apparatus and servo pattern write method thereof
TOSHIBA KK8 citations74
US7525755B2Apr 28, 2009
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK2 citations63
US7298580B2Nov 20, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK2 citations63
US7268962B2Sep 11, 2007
Method and apparatus for determining track pitch for writing servo information in a disk drive
TOSHIBA KK3 citations63
US7239472B2Jul 3, 2007
Method and apparatus for writing data in a disk drive
TOSHIBA KK6 citations63
US7221533B2May 22, 2007
Method and apparatus for servo information writing in a disk drive
TOSHIBA KK4 citations62
US7855850B2Dec 21, 2010
Method and apparatus for head positioning using spiral servo patterns in a disk drive
TOSHIBA KK4 citations61
US7852593B2Dec 14, 2010
Method and apparatus for writing servo data, using spiral servo patterns in a disk drive
TOSHIBA KK2 citations61
US7804659B2Sep 28, 2010
Method and apparatus for positioning head using spiral servo pattern in a disk drive
TOSHIBA KK2 citations61
US7710682B2May 4, 2010
Method and apparatus for writing spiral servo pattern in a disk drive
TOSHIBA KK4 citations61
US7630161B2Dec 8, 2009
Method and apparatus for writing spiral servo pattern in a disk drive
TOSHIBA KK4 citations61
US7457074B2Nov 25, 2008
Method and apparatus for correcting errors while writing spiral servo information in a disk drive
TOSHIBA KK4 citations59
US7423835B2Sep 9, 2008
Method and apparatus for servo control using spiral servo information in a disk drive
TOSHIBA KK5 citations59
US7961578B2Jun 14, 2011
Method and apparatus for generating synchronous clock for write operation in a disk drive
TOSHIBA KK1 citations52
US7933088B2Apr 26, 2011
Disk drive having a disk of discrete-track media type
TOSHIBA KK0 citations52
US7548394B2Jun 16, 2009
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK0 citations52
US7538968B2May 26, 2009
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK0 citations52
US7532430B2May 12, 2009
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK0 citations52
US7298577B2Nov 20, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK0 citations52
US7298578B2Nov 20, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK0 citations52
US7298581B2Nov 20, 2007
Magnetic recording medium and magnetic recording/reproducing apparatus
TOSHIBA KK0 citations52
US10115422B2Oct 30, 2018
Hard disk drive, manufacturing method of the same, and servo data writing method
TOSHIBA KK0 citations50
US9905257B2Feb 27, 2018
Hard disk drive, manufacturing method of the same, and servo data writing method
TOSHIBA KK1 citations50
US7920353B2Apr 5, 2011
Disk drive configured to calculate head rebound distance
TOSHIBA KK1 citations45
US10636446B2Apr 28, 2020
Magnetic disk device and head positioning method
TOSHIBA KK0 citations42
US7173789B2Feb 6, 2007
Head position calculation method in magnetic disc apparatus
TOSHIBA KK0 citations41
US8363347B2Jan 29, 2013
Storage device and information correction method
TOSHIBA KK0 citations40
US7538965B2May 26, 2009
Method and apparatus for writing servo management information in a disk drive
TOSHIBA KK0 citations38