Inventor
OSAFUNE KOJI
JP18 patents
Patents
18 patentsUS6594102B1Jul 15, 2003
Apparatus and method for retracting the head on power down in a disk drive
TOSHIBA KK62 citations96
US6396652B1May 28, 2002
Apparatus and method for control head unloading on power down in a disk drive
TOSHIBA KK100 citations96
US4931889AJun 5, 1990
Method and apparatus depending on the selected power source for controlling the positioning of a recording/reproducing apparatus
TOSHIBA KK52 citations92
US4803571AFeb 7, 1989
Floppy disc magnetic head apparatus compatible with both horizontal and perpendicular recording media
TOSHIBA KK39 citations91
US5636088AJun 3, 1997
Head assembly controlling distortion due to temperature variation and disk apparatus using the head assembly
TOSHIBA KK34 citations90
US7035036B2Apr 25, 2006
Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive
TOSHIBA KK15 citations84
US6762895B2Jul 13, 2004
Magnetic disk drive and position error signal generation method
TOSHIBA KK16 citations84
US7489468B2Feb 10, 2009
Method and apparatus for head positioning control in a disk drive
TOSHIBA KK8 citations83
US7057844B2Jun 6, 2006
Method and apparatus for head positioning control in a disk drive
TOSHIBA KK7 citations74
US7009792B2Mar 7, 2006
Method and apparatus for data reproducing in a disk drive
TOSHIBA KK7 citations74
US4811126AMar 7, 1989
Recording/reproducing system for a magnetic recording medium including synchronization detecting circuit
TOSHIBA KK11 citations74
US6950259B2Sep 27, 2005
Disk drive with control of read and write gate signals for read and write operation
TOSHIBA KK7 citations73
US6046876AApr 4, 2000
Head signal device with noise immunity function, for use in a disk storage apparatus
TOSHIBA KK10 citations73
US4709279ANov 24, 1987
Read/write amplifier power control device for a disk apparatus
TOSHIBA KK7 citations73
US7019936B2Mar 28, 2006
Method and apparatus for head positioning control in perpendicular magnetic recording of disk drive
TOSHIBA KK3 citations62
US4745275AMay 17, 1988
Sensor circuit
TOSHIBA KK2 citations62
US5038230AAug 6, 1991
Method of accurately executing read access and magnetic recording/reproducing apparatus therefor
TOSHIBA KK6 citations58
US5233481AAug 3, 1993
Magnetic recording and reproducing apparatus
TOSHIBA KK1 citations52