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Yasuhide Ouchi
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Odawara-shi, JP
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Patents Grants
last 30 patents
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
Magnetic recording and reproduction apparatus
Patent number
6,496,316
Issue date
Dec 17, 2002
Hitachi, Ltd.
Yosuke Hori
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording and reproduction apparatus
Patent number
6,175,460
Issue date
Jan 16, 2001
Hitachi, Ltd.
Yosuke Hori
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording and reproducing apparatus including a viterbi de...
Patent number
6,046,873
Issue date
Apr 4, 2000
Hitachi, Ltd.
Yosuke Hori
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for recording and reading an optical disk
Patent number
5,848,045
Issue date
Dec 8, 1998
Hitachi, Ltd.
Fumiyoshi Kirino
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
Information
Patent Grant
Longitudinal magnetic recording medium and apparatus
Patent number
5,766,718
Issue date
Jun 16, 1998
Hitachi, Ltd.
Yoshibumi Matsuda
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Optical disk apparatus and recording and reading method for an opti...
Patent number
5,703,855
Issue date
Dec 30, 1997
Hitachi, Ltd.
Fumiyoshi Kirino
G11 - INFORMATION STORAGE
Information
Patent Grant
Data recording/reproducing apparatus having viterbi decoder and met...
Patent number
5,659,309
Issue date
Aug 19, 1997
Hitachi, Ltd.
Terumi Takashi
G11 - INFORMATION STORAGE
Information
Patent Grant
Variable length data in a parallel disk array
Patent number
5,572,699
Issue date
Nov 5, 1996
Hitachi, Ltd.
Yoshihisa Kamo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Correcting non-linear distortions of optical information with a non...
Patent number
5,572,503
Issue date
Nov 5, 1996
Hitachi, Ltd.
Naoki Satoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Recording/reproducing apparatus with maximum likelihood sequence es...
Patent number
5,568,330
Issue date
Oct 22, 1996
Hitachi, Ltd.
Hideki Sawaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording and reproducing method using phase discriminatio...
Patent number
5,467,232
Issue date
Nov 14, 1995
Hitachi, Ltd.
Yasuhide Ouchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Information processing apparatus for processing reproduction signal...
Patent number
5,418,660
Issue date
May 23, 1995
Hitachi, Ltd.
Naoki Sato
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording and reproducing apparatus, reproduction signal p...
Patent number
5,400,189
Issue date
Mar 21, 1995
Hitachi, Ltd.
Naoki Sato
G11 - INFORMATION STORAGE
Information
Patent Grant
Decoding method and apparatus with maximum likelihood sequence esti...
Patent number
5,392,316
Issue date
Feb 21, 1995
Hitachi, Ltd.
Hideki Sawaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for error correction and circuit for realizing same
Patent number
5,325,364
Issue date
Jun 28, 1994
Hitachi, Ltd.
Yasuhide Ouchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Peak detection method and apparatus therefor
Patent number
5,287,228
Issue date
Feb 15, 1994
Hitachi, Ltd.
Hideki Sawaguchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Readout circuit in magnetic recording device
Patent number
5,008,761
Issue date
Apr 16, 1991
Hitachi, Ltd.
Nobumasa Nishiyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Readout circuit in magnetic recording device
Patent number
4,907,100
Issue date
Mar 6, 1990
Hitachi, Ltd.
Nobumasa Nishiyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Multi slice level signal circuit
Patent number
4,823,208
Issue date
Apr 18, 1989
Hitachi, Ltd.
Yasuhide Ouchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Read channel for magnetic recording
Patent number
4,774,601
Issue date
Sep 27, 1988
Hitachi, Ltd.
Yasuhide Ouchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Waveform equalizing circuit
Patent number
4,651,236
Issue date
Mar 17, 1987
Hitachi, Ltd.
Yasuhide Ouchi
G11 - INFORMATION STORAGE
Information
Patent Grant
Equalizer used for magnetic storage device
Patent number
4,644,424
Issue date
Feb 17, 1987
Hitachi, Ltd.
Nobumasa Nishiyama
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
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
Signal processing circuit and information recording/reproducing app...
Publication number
20010009483
Publication date
Jul 26, 2001
Naoki Satoh
G11 - INFORMATION STORAGE