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Yoshiju Watanabe
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Ninomiyamachi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Disk drive including a host interface supporting different sizes of...
Patent number
8,291,190
Issue date
Oct 16, 2012
Hitachi Global Storage Technologies, Netherlands B.V.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Data storage device and management method of cryptographic key thereof
Patent number
8,239,691
Issue date
Aug 7, 2012
Hitachi Global Storage Technologies, Netherlands B.V.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Hard disk drive with certification function
Patent number
8,065,516
Issue date
Nov 22, 2011
Hitachi Global Storage Technologies Netherlands B.V.
Yoshiju Watanabe
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Magnetic disk drive and magnetic disk medium
Patent number
7,408,733
Issue date
Aug 5, 2008
Hitachi Global Storage Technologies Netherlands B.V.
Naoki Satoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Coding device and decoding device
Patent number
7,268,707
Issue date
Sep 11, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Terumi Takashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronizing signal detector, signal processing device using...
Patent number
7,256,953
Issue date
Aug 14, 2007
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Decoding apparatus and decoding method
Patent number
7,199,955
Issue date
Apr 3, 2007
Hitachi Global Storage Technologies Japan, Ltd.
Akihiko Hirano
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronizing signal detecting device
Patent number
7,184,505
Issue date
Feb 27, 2007
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording and reproducing method and information record...
Patent number
7,099,250
Issue date
Aug 29, 2006
Hitachi Global Storage Technologies Japan, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronization detection device, information recording device...
Patent number
7,039,141
Issue date
May 2, 2006
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronization detection method, information recording method...
Patent number
7,020,833
Issue date
Mar 28, 2006
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Error detecting method and device, information storing and reproduc...
Patent number
6,976,196
Issue date
Dec 13, 2005
Hitachi Global Storage Technologies Japan, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Signal processing technique for preventing delay in read time from...
Patent number
6,972,917
Issue date
Dec 6, 2005
Hitachi, Ltd.
Hideaki Maeda
G11 - INFORMATION STORAGE
Information
Patent Grant
Signal processing method and apparatus and disk device using the me...
Patent number
6,856,660
Issue date
Feb 15, 2005
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Information recording and reproducing method and information record...
Patent number
6,829,206
Issue date
Dec 7, 2004
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronizing signal detecting device
Patent number
6,823,030
Issue date
Nov 23, 2004
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
DATA SYNCHRONIZING SIGNAL DETECTOR, SIGNAL PROCESSING DEVICE USING...
Patent number
6,791,777
Issue date
Sep 14, 2004
Hitachi Global Storage Technologies Japan, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Decoding apparatus and decoding method
Patent number
6,704,154
Issue date
Mar 9, 2004
Hitachi, Ltd.
Akihiko Hirano
G11 - INFORMATION STORAGE
Information
Patent Grant
Signal processing circuit and information recording/reproducing app...
Patent number
6,661,594
Issue date
Dec 9, 2003
Hitachi, Ltd.
Naoki Satoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronizing signal detecting device
Patent number
6,473,477
Issue date
Oct 29, 2002
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Data encoding method for digital data recording and data recording...
Patent number
6,373,407
Issue date
Apr 16, 2002
Hitachi, Ltd.
Takushi Nishiya
G11 - INFORMATION STORAGE
Information
Patent Grant
Coding apparatus and coding method
Patent number
6,335,841
Issue date
Jan 1, 2002
Hitachi, Ltd.
Akihiko Hirano
G11 - INFORMATION STORAGE
Information
Patent Grant
Equalizer and magnetically recorded-signal reproducer
Patent number
6,304,402
Issue date
Oct 16, 2001
Hitachi Ltd.
Yasutaka Nishida
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronizing signal detecting device
Patent number
6,259,753
Issue date
Jul 10, 2001
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Equalizer having a processing unit for selecting a coefficient out...
Patent number
6,144,515
Issue date
Nov 7, 2000
Hitachi, Ltd.
Yasutaka Nishida
G11 - INFORMATION STORAGE
Information
Patent Grant
Data synchronizing signal detecting device
Patent number
6,125,156
Issue date
Sep 26, 2000
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Equalizer having a processing unit for selecting a coefficient out...
Patent number
5,970,091
Issue date
Oct 19, 1999
Hitachi, Ltd.
Yasutaka Nishida
G11 - INFORMATION STORAGE
Information
Patent Grant
Signal processing circuit and information recording/reproducing app...
Patent number
5,818,655
Issue date
Oct 6, 1998
Hitachi, Ltd.
Naoki Satoh
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
DISK DRIVE INCLUDING A HOST INTERFACE SUPPORTING DIFFERENT SIZES OF...
Publication number
20110072232
Publication date
Mar 24, 2011
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
DATA-STORAGE DEVICE AND ANALYSIS METHOD FOR DATA-STORAGE DEVICE
Publication number
20100149684
Publication date
Jun 17, 2010
Akira KOJIMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Data storage device and management method of cryptographic key thereof
Publication number
20100031061
Publication date
Feb 4, 2010
Yoshiju Watanabe
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Magnetic disk drive and magnetic disk medium
Publication number
20090015960
Publication date
Jan 15, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Naoki Satoh
G11 - INFORMATION STORAGE
Information
Patent Application
Data recording device, and data management method
Publication number
20080075282
Publication date
Mar 27, 2008
Hitachi Global Storage Technologies Netherlands B.V.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Storage device, controller for storage device, and storage device c...
Publication number
20070226412
Publication date
Sep 27, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Harumi Morino
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Disk unit, magnetic disk unit and information storage unit
Publication number
20070192852
Publication date
Aug 16, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Hard disk drive with certification function
Publication number
20070083704
Publication date
Apr 12, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Yoshiju Watanabe
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Magnetic disk drive and magnetic disk medium
Publication number
20060227451
Publication date
Oct 12, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Naoki Satoh
G11 - INFORMATION STORAGE
Information
Patent Application
Coding device and decoding device
Publication number
20060220931
Publication date
Oct 5, 2006
Hitachi Global Storage Technologies Netherlands B.V.
Terumi Takashi
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Magnetic disk drive with a use time limiting function
Publication number
20050219731
Publication date
Oct 6, 2005
Hitachi Global Storage Technologies Netherlands B.V.
Yoshiju Watanabe
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Signal processing method and apparatus and disk device using the me...
Publication number
20050117871
Publication date
Jun 2, 2005
Yoshiju Watanabe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Data synchronizing signal detecting device
Publication number
20050053181
Publication date
Mar 10, 2005
Yoshiju Watanabe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Data synchronizing signal detector, signal processing device using...
Publication number
20050007684
Publication date
Jan 13, 2005
Yoshiju Watanabe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Decoding apparatus and decoding method
Publication number
20040156136
Publication date
Aug 12, 2004
Akihiko Hirano
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Error detecting method and device, information storing and reproduc...
Publication number
20030182606
Publication date
Sep 25, 2003
Hitachi, Ltd
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Signal processing circuit and information recording/reproducing app...
Publication number
20030035236
Publication date
Feb 20, 2003
Hitachi, Ltd.
Naoki Satoh
G11 - INFORMATION STORAGE
Information
Patent Application
Data synchronizing signal detecting device
Publication number
20030012319
Publication date
Jan 16, 2003
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Information write/read device and data read method
Publication number
20020135916
Publication date
Sep 26, 2002
Hitachi, Ltd
Hideaki Maeda
G11 - INFORMATION STORAGE
Information
Patent Application
Data synchronization detection device, information recording device...
Publication number
20020048327
Publication date
Apr 25, 2002
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Data synchronization detection method, information recording method...
Publication number
20020049954
Publication date
Apr 25, 2002
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Decoding apparatus and decoding method
Publication number
20020030913
Publication date
Mar 14, 2002
Akihiko Hirano
G11 - INFORMATION STORAGE
Information
Patent Application
Data synchronizing signal detector, signal processing device using...
Publication number
20010043417
Publication date
Nov 22, 2001
Hitachi, Ltd.
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Data synchronizing signal detecting device
Publication number
20010022825
Publication date
Sep 20, 2001
Yoshiju Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
Signal processing circuit and information recording/reproducing app...
Publication number
20010009483
Publication date
Jul 26, 2001
Naoki Satoh
G11 - INFORMATION STORAGE