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Tetsuo Ueda
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Sagamihara-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Data storage device computing notch filters for multiple temperatures
Patent number
10,629,234
Issue date
Apr 21, 2020
Western Digital Technologies, Inc.
Hengchang Guo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Head servo control system and head servo control method
Patent number
8,503,124
Issue date
Aug 6, 2013
HGST Netherlands B.V.
Hiroshi Uchida
G11 - INFORMATION STORAGE
Information
Patent Grant
Hard-disk drive, method of controlling the hard-disk drive, and met...
Patent number
7,986,486
Issue date
Jul 26, 2011
Hitachi Global Storage Technologies, Netherlands B.V.
Jiro Abe
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and system for time-shift based rotational vibration sensing...
Patent number
7,724,457
Issue date
May 25, 2010
Hitachi Global Storage Technologies Netherlands B.V.
Hien Dang
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for detecting servo timing marks in a magnetic...
Patent number
7,675,701
Issue date
Mar 9, 2010
Hitachi Global Storage Technologies Netherlands, B.V.
Hideki Ohzeki
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive device and method for error recovery procedure therefor
Patent number
7,595,955
Issue date
Sep 29, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Mirei Hosono
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive and control method thereof
Patent number
7,561,365
Issue date
Jul 14, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Masaaki Noguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording apparatus
Patent number
7,489,470
Issue date
Feb 10, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Hiroshi Uchida
G11 - INFORMATION STORAGE
Information
Patent Grant
Data storage device and control method therefor involving flying he...
Patent number
7,298,566
Issue date
Nov 20, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Tetsuo Ueda
G11 - INFORMATION STORAGE
Information
Patent Grant
Data reliability improvement at low temperature
Patent number
7,277,251
Issue date
Oct 2, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Satoshi Ishii
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk drive and method for seek operations with reduced noise
Patent number
7,271,976
Issue date
Sep 18, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Satoshi Ishii
G11 - INFORMATION STORAGE
Information
Patent Grant
Data storage device and control method therefor to prevent off-trac...
Patent number
7,209,311
Issue date
Apr 24, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Tetsuo Ueda
G11 - INFORMATION STORAGE
Information
Patent Grant
Data storage apparatus, read data processor, and read data processi...
Patent number
6,981,205
Issue date
Dec 27, 2005
Lenovo (Singapore) PTE LTD
Yukio Fukushima
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and system for time-shift based rotational vibration sensing...
Patent number
6,947,243
Issue date
Sep 20, 2005
Hitachi Global Storage Technologies Netherlands B.V.
Hien Dang
G11 - INFORMATION STORAGE
Information
Patent Grant
Head movement controlling based on servo generated speed control va...
Patent number
6,914,745
Issue date
Jul 5, 2005
Hitachi Global Storage Technologies Netherlands B.V.
Masayuki Takeuchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Data storage unit and method for starting data storage unit
Patent number
6,721,844
Issue date
Apr 13, 2004
Hitachi Global Storage Technologies Netherlands B.V.
Kazushige Okutsu
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for detecting abnormal magnetic head fly height
Patent number
6,671,110
Issue date
Dec 30, 2003
Hitachi Global Storage Technologies Netherlands B.V.
Sachiyo Baba
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for controlling write cache transfer and disk unit
Patent number
6,622,206
Issue date
Sep 16, 2003
International Business Machines Corporation
Atsushi Kanamaru
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for disk drive seek control
Patent number
6,597,530
Issue date
Jul 22, 2003
International Business Machines Corporation
Hideo Asano
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for adaptive resonance mode cancellation servo...
Patent number
6,574,065
Issue date
Jun 3, 2003
International Business Machines Corporation
Sri M. Sri-Jayantha
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive device with a high frequency access method and apparatus
Patent number
6,556,369
Issue date
Apr 29, 2003
Hitachi Global Storage Technologies
Atsushi Kanamaru
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive with off-track write prevention
Patent number
6,496,315
Issue date
Dec 17, 2002
International Business Machines Corporation
Tetsuo Ueda
G11 - INFORMATION STORAGE
Information
Patent Grant
Servo system for disk-flutter in rotating storage systems
Patent number
6,487,028
Issue date
Nov 26, 2002
International Business Machines Corporation
S. M. Sri-Jayantha
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk device, track positioning method and method for generating a p...
Patent number
6,476,997
Issue date
Nov 5, 2002
International Business Machines Corporation
Yukio Fukushima
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for disk drive seek control
Patent number
6,456,451
Issue date
Sep 24, 2002
International Business Machines Corporation
Hideo Asano
G11 - INFORMATION STORAGE
Information
Patent Grant
Dummy write method for a magnetic head and drive unit for carrying...
Patent number
6,441,982
Issue date
Aug 27, 2002
International Business Machines Corporation
Yukio Fukushima
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk-flutter servo control in rotating storage system with optimum...
Patent number
6,339,512
Issue date
Jan 15, 2002
International Business Machines Corporation
S. M. Sri-Jayantha
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive device and a method for controlling the same
Patent number
6,289,416
Issue date
Sep 11, 2001
International Business Machines Corporation
Yukio Fukushima
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Actuator control apparatus and magnetic disk unit
Patent number
6,216,050
Issue date
Apr 10, 2001
International Business Machines Corporation
Hiroyuki Ono
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive and write control method for a disk drive
Patent number
6,111,714
Issue date
Aug 29, 2000
International Business Machines Corporation
Tetsuo Ueda
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
HEAD SERVO CONTROL SYSTEM AND HEAD SERVO CONTROL METHOD
Publication number
20110069411
Publication date
Mar 24, 2011
Hiroshi Uchida
G11 - INFORMATION STORAGE
Information
Patent Application
HARD-DISK DRIVE, METHOD OF CONTROLLING THE HARD-DISK DRIVE, AND MET...
Publication number
20090290251
Publication date
Nov 26, 2009
Jiro Abe
G11 - INFORMATION STORAGE
Information
Patent Application
Disk drive device and method for error recovery procedure therefor
Publication number
20080186617
Publication date
Aug 7, 2008
Mirei Hosono
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic recording apparatus
Publication number
20070230025
Publication date
Oct 4, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Hiroshi Uchida
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk system
Publication number
20070146919
Publication date
Jun 28, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Hideki Ohzeki
G11 - INFORMATION STORAGE
Information
Patent Application
Disk drive and control method thereof
Publication number
20070070540
Publication date
Mar 29, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Masaaki Noguchi
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk drive and method for executing seek operation
Publication number
20060092549
Publication date
May 4, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Satoshi Ishii
G11 - INFORMATION STORAGE
Information
Patent Application
Data reliability improvement at low temperature
Publication number
20060092550
Publication date
May 4, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Satoshi Ishii
G11 - INFORMATION STORAGE
Information
Patent Application
Method and system for time-shift based rotational vibration sensing...
Publication number
20050270685
Publication date
Dec 8, 2005
Hitachi Global Storage Technologies Netherlands B.V.
Hien Dang
G11 - INFORMATION STORAGE
Information
Patent Application
Data storage device and control method therefor to prevent off-trac...
Publication number
20050185320
Publication date
Aug 25, 2005
Hitachi Global Storage Technologies Netherlands, B.V.
Tetsuo Ueda
G11 - INFORMATION STORAGE
Information
Patent Application
Data storage device and control method therefor involving flying he...
Publication number
20050185312
Publication date
Aug 25, 2005
Hitachi Global Storage Technologies Netherlands, B.V.
Tetsuo Ueda
G11 - INFORMATION STORAGE
Information
Patent Application
Method and system for time-shift based rotational vibration sensing...
Publication number
20030218823
Publication date
Nov 27, 2003
International Business Machines Corporation
Hien Dang
G11 - INFORMATION STORAGE
Information
Patent Application
Data storage apparatus, read data processor, and read data processi...
Publication number
20030112669
Publication date
Jun 19, 2003
International Business Machines Corporation
Yukio Fukushima
G11 - INFORMATION STORAGE
Information
Patent Application
Hard disk drive, data storing and reproducing device, head movement...
Publication number
20030035240
Publication date
Feb 20, 2003
International Business Machines Corporation
Masayuki Takeuchi
G11 - INFORMATION STORAGE
Information
Patent Application
Method and apparatus for disk drive seek control
Publication number
20020085305
Publication date
Jul 4, 2002
International Business Machines Corp.
Hideo Asano
G11 - INFORMATION STORAGE
Information
Patent Application
DISK DEVICE, TRACK POSITIONING METHOD AND METHOD FOR GENERATING A P...
Publication number
20010036032
Publication date
Nov 1, 2001
YUKIO FUKUSHIMA
G11 - INFORMATION STORAGE
Information
Patent Application
Method and apparatus for detecting abnormal magnetic head fly height
Publication number
20010013985
Publication date
Aug 16, 2001
International Business Machines Corporation
Sachiyo Baba
G11 - INFORMATION STORAGE