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Tatsuhiko Kosugi
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Patents Grants
last 30 patents
Information
Patent Grant
Position demodulation apparatus and position demodulation method
Patent number
9,230,584
Issue date
Jan 5, 2016
Kabushiki Kaisha Toshiba
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Head position demodulating method and magnetic disk device
Patent number
9,019,652
Issue date
Apr 28, 2015
Kabushiki Kaisha Toshiba
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Position demodulator and position demodulation method
Patent number
8,625,230
Issue date
Jan 7, 2014
Kabushiki Kaisha Toshiba
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Position demodulation apparatus and position demodulation method
Patent number
8,553,345
Issue date
Oct 8, 2013
Kabushiki Kaisha Toshiba
Hiroshi Oyabu
G11 - INFORMATION STORAGE
Information
Patent Grant
Servo frame interval correction apparatus, storage apparatus and se...
Patent number
8,446,685
Issue date
May 21, 2013
Kabushiki Kaisha Toshiba
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Storage device, head position detection method and control circuit
Patent number
8,023,219
Issue date
Sep 20, 2011
Toshiba Storage Device Corporation
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Storage device and control device
Patent number
7,742,253
Issue date
Jun 22, 2010
Toshiba Storage Device Corporation
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for recording servo frame, storage disk, and m...
Patent number
7,508,610
Issue date
Mar 24, 2009
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Information storage apparatus, and control method and program for t...
Patent number
7,463,438
Issue date
Dec 9, 2008
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Recording apparatus having discoid record mediums
Patent number
7,196,865
Issue date
Mar 27, 2007
Fujitsu Limited
Kazunori Mori
G11 - INFORMATION STORAGE
Information
Patent Grant
Resonance-frequency measuring method determining a resonance freque...
Patent number
7,164,261
Issue date
Jan 16, 2007
Fujitsu Limited
Shuichi Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Positioner for positioning head on a disk
Patent number
7,110,213
Issue date
Sep 19, 2006
Fujitsu Limited
Tomoaki Saito
G11 - INFORMATION STORAGE
Information
Patent Grant
Storage apparatus and storage medium
Patent number
7,050,250
Issue date
May 23, 2006
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Resonance-frequency measuring method determining a resonance freque...
Patent number
6,774,615
Issue date
Aug 10, 2004
Fujitsu Limited
Susumu Yoshida
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk apparatus and control method therefor
Patent number
6,556,368
Issue date
Apr 29, 2003
Fujitsu Limited
Kazunori Mori
G11 - INFORMATION STORAGE
Information
Patent Grant
Servo control method and information storage device
Patent number
6,535,348
Issue date
Mar 18, 2003
Fujitsu Limited
Yoshiyuki Kagami
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of detecting position on disk, disk unit and disk
Patent number
6,498,695
Issue date
Dec 24, 2002
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Storage device and method of detecting a position of a head on a di...
Patent number
6,466,394
Issue date
Oct 15, 2002
Fujitsu Limited
Tomoaki Saito
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of detecting position on disk, disk unit and disk
Patent number
6,262,861
Issue date
Jul 17, 2001
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk device and disk device calibrating method
Patent number
6,239,940
Issue date
May 29, 2001
Fujitsu, Limited
Tatsuro Sasamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk apparatus, and phase demodulating device and method for a disk...
Patent number
5,757,576
Issue date
May 26, 1998
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk apparatus for detecting position of head by reading phase serv...
Patent number
5,694,265
Issue date
Dec 2, 1997
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of controlling magnetic disk unit based on version data
Patent number
5,675,446
Issue date
Oct 7, 1997
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for correcting offset in a magnetic disk including apparent...
Patent number
5,606,469
Issue date
Feb 25, 1997
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Power supply system
Patent number
5,592,353
Issue date
Jan 7, 1997
Fujitsu Limited
Toru Shinohara
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Head position detecting method and apparatus
Patent number
5,523,900
Issue date
Jun 4, 1996
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk unit having a plurality of magnetic heads
Patent number
5,432,659
Issue date
Jul 11, 1995
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
HEAD POSITION DEMODULATING METHOD AND MAGNETIC DISK DEVICE
Publication number
20150103435
Publication date
Apr 16, 2015
Kabushiki Kaisha Toshiba
Tatsuhiko KOSUGI
G11 - INFORMATION STORAGE
Information
Patent Application
POSITION DEMODULATION APPARATUS AND POSITION DEMODULATION METHOD
Publication number
20120314321
Publication date
Dec 13, 2012
Kabushiki Kaisha Toshiba
Hiroshi OYABU
G11 - INFORMATION STORAGE
Information
Patent Application
POSITION DEMODULATOR AND POSITION DEMODULATION METHOD
Publication number
20120293885
Publication date
Nov 22, 2012
Kabushiki Kaisha Toshiba
Tatsuhiko KOSUGI
G11 - INFORMATION STORAGE
Information
Patent Application
DISK STORAGE APPARATUS AND METHOD FOR SERVO CONTROLLING
Publication number
20110249354
Publication date
Oct 13, 2011
Kabushiki Kaisha Toshiba
Tatsuhiko KOSUGI
G11 - INFORMATION STORAGE
Information
Patent Application
STORAGE MEDIUM AND METHOD AND PROGRAM FOR DETECTING TRACK POSITION...
Publication number
20100302675
Publication date
Dec 2, 2010
TOSHIBA STORAGE DEVICE CORPORATION
Tatsuhiko KOSUGI
G11 - INFORMATION STORAGE
Information
Patent Application
FREQUENCY CONTROL APPARATUS AND STORAGE DEVICE
Publication number
20100134913
Publication date
Jun 3, 2010
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Application
STORAGE DEVICE, HEAD POSITION DETECTION METHOD AND CONTROL CIRCUIT
Publication number
20100073807
Publication date
Mar 25, 2010
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Application
SERVO FRAME INTERVAL CORRECTION APPARATUS, STORAGE APPARATUS AND SE...
Publication number
20090086598
Publication date
Apr 2, 2009
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Application
Storage device and control device
Publication number
20080174903
Publication date
Jul 24, 2008
Fujitsu Limited
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Application
Medium storage device, position demodulation device and position de...
Publication number
20080159092
Publication date
Jul 3, 2008
Fujitsu Limited
Yoshiyuki Kagami
G11 - INFORMATION STORAGE
Information
Patent Application
Method and apparatus for recording servo frame, storage disk, and m...
Publication number
20060221479
Publication date
Oct 5, 2006
FUJITSU LIMITED
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Application
Information storage apparatus, and control method and program for t...
Publication number
20060082918
Publication date
Apr 20, 2006
FUJITSU LIMITED
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Application
Positioner for positioning head on a disk
Publication number
20050185321
Publication date
Aug 25, 2005
FUJITSU LIMITED
Tomoaki Saito
G11 - INFORMATION STORAGE
Information
Patent Application
Recording apparatus having discoid record mediums
Publication number
20050088775
Publication date
Apr 28, 2005
FUJITSU LIMITED
Kazunori Mori
G11 - INFORMATION STORAGE
Information
Patent Application
Storage apparatus and storage medium
Publication number
20040223247
Publication date
Nov 11, 2004
FUJITSU LIMITED
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE
Information
Patent Application
Resonance-frequency measuring method determining a resonance freque...
Publication number
20040196053
Publication date
Oct 7, 2004
Fujitsu Limited
Shuichi Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Application
Resonance-frequency measuring method determining a resonance freque...
Publication number
20030057935
Publication date
Mar 27, 2003
FUJITSU LIMITED
Susumu Yoshida
G11 - INFORMATION STORAGE
Information
Patent Application
Method of detecting position on disk, disk unit and disk
Publication number
20010046103
Publication date
Nov 29, 2001
FUJITSU LIMITED
Tatsuhiko Kosugi
G11 - INFORMATION STORAGE