Hideki Sawaguchi

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus, signal-processing circuit and device for magnetic record...
- Patent number 8,144,415
- Issue date Mar 27, 2012
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording format for information date, information recording/reprod...
- Patent number 7,865,799
- Issue date Jan 4, 2011
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of servo writing for magnetic recording system, magnetic rec...
- Patent number 7,839,590
- Issue date Nov 23, 2010
- Hitachi Global Storage Technologies Japan, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus, signal-processing circuit and device for magnetic record...
- Patent number 7,817,367
- Issue date Oct 19, 2010
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus having an adjustable mechanism to compensat...
- Patent number 7,545,595
- Issue date Jun 9, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording format for information date, information recording/reprod...
- Patent number 7,526,710
- Issue date Apr 28, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/regenerating device, method of encoding error correction,...
- Patent number 7,526,716
- Issue date Apr 28, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Masaharu Kondou
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Apparatus, signal-processing circuit and device for magnetic record...
- Patent number 7,502,189
- Issue date Mar 10, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive
- Patent number 7,443,625
- Issue date Oct 28, 2008
- Hitachi Global Storage Technologies Japan Ltd.
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of servo writing for magnetic recording system, magnetic rec...
- Patent number 7,436,611
- Issue date Oct 14, 2008
- Hitachi Global Storage Technologies Japan, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal processing method and signal processing circuit
- Patent number 7,296,215
- Issue date Nov 13, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Morishi Izumita
- G11 - INFORMATION STORAGE
Information Patent Grant
Device and signal processing circuit for magnetic recording, magnet...
- Patent number 7,259,929
- Issue date Aug 21, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Data decoding method and circuit and information recording and repr...
- Patent number 7,213,195
- Issue date May 1, 2007
- Hitachi Global Storage Technologies
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording apparatus
- Patent number 7,092,181
- Issue date Aug 15, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of servo writing for magnetic recording system, magnetic rec...
- Patent number 7,075,743
- Issue date Jul 11, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Grant
Data recording/readback method and data recording/readback device f...
- Patent number 7,076,721
- Issue date Jul 11, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording apparatus
- Patent number 7,068,462
- Issue date Jun 27, 2006
- Hitachi, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device having a write head to write by shifting in a...
- Patent number 7,057,838
- Issue date Jun 6, 2006
- Hitachi, Ltd.
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal processing circuit
- Patent number 7,046,745
- Issue date May 16, 2006
- Hitachi, Ltd.
- Seiichi Mita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus having an adjustable mechanism to compensat...
- Patent number 7,027,248
- Issue date Apr 11, 2006
- Hitachi, Ltd.
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Data decoding method and circuit and information recording and repr...
- Patent number 7,024,617
- Issue date Apr 4, 2006
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Device and signal processing circuit for magnetic recording, magnet...
- Patent number 6,912,100
- Issue date Jun 28, 2005
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Data recording/reproducing signal processing circuit for magnetic r...
- Patent number 6,741,412
- Issue date May 25, 2004
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Decoding circuit using path sequence including feed-back type path...
- Patent number 6,725,418
- Issue date Apr 20, 2004
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Data recording/readback method and data recording/readback device f...
- Patent number 6,668,349
- Issue date Dec 23, 2003
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Partial response demodulating method and apparatus using the same
- Patent number 6,337,889
- Issue date Jan 8, 2002
- Hitachi, Ltd.
- Seiichi Mita
- G11 - INFORMATION STORAGE
Information Patent Grant
Decoding circuit and information processing apparatus
- Patent number 6,334,201
- Issue date Dec 25, 2001
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital write-and-read method and signal processing apparatus
- Patent number 5,881,071
- Issue date Mar 9, 1999
- Hitachi, Ltd.
- Alexander Kuznetsov
- G11 - INFORMATION STORAGE
Information Patent Grant
Decision feedback equalization circuit
- Patent number 5,594,756
- Issue date Jan 14, 1997
- Hitachi, Ltd.
- Wataru Sakurai
- 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

Patents Applicationslast 30 patents

Information Patent Application
Apparatus, signal-processing circuit and device for magnetic record...
- Publication number 20110013306
- Publication date Jan 20, 2011
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Apparatus, signal-processing circuit and device for magnetic record...
- Publication number 20090021852
- Publication date Jan 22, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Method of servo writing for magnetic recording system, magnetic rec...
- Publication number 20090021854
- Publication date Jan 22, 2009
- Hitachi Global Storage Technologies Japan, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Application
RECORDING FORMAT FOR INFORMATION DATE, INFORMATION RECORDING/REPROD...
- Publication number 20080313524
- Publication date Dec 18, 2008
- Hideki Sawaguchi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Magnetic disk drive
- Publication number 20060187578
- Publication date Aug 24, 2006
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Method of servo writing for magnetic recording system, magnetic rec...
- Publication number 20060171052
- Publication date Aug 3, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Application
Data decoding method and circuit and information recording and repr...
- Publication number 20060156208
- Publication date Jul 13, 2006
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus having an adjustable mechanism to compensat...
- Publication number 20060132957
- Publication date Jun 22, 2006
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording apparatus
- Publication number 20050270676
- Publication date Dec 8, 2005
- Hitachi, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Application
Device and signal processing circuit for magnetic recording, magnet...
- Publication number 20050237651
- Publication date Oct 27, 2005
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Recording/regenerating device, method of encoding error correction,...
- Publication number 20050216818
- Publication date Sep 29, 2005
- Hitachi Global Storage Technologies Netherlands, B.V.
- Masaharu Kondou
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Signal processing method and signal processing circuit
- Publication number 20050044468
- Publication date Feb 24, 2005
- Hitachi Global Storage Technologies, Japan, Ltd.
- Morishi Izumita
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Recording format for information date, information recording/reprod...
- Publication number 20040205383
- Publication date Oct 14, 2004
- Hideki Sawaguchi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Device and signal processing circuit for magnetic recording, magnet...
- Publication number 20040190172
- Publication date Sep 30, 2004
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Data recording/readback method and data recording/readback device f...
- Publication number 20040158791
- Publication date Aug 12, 2004
- Hitachi Limited
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus having an adjustable mechanism to compensat...
- Publication number 20040027709
- Publication date Feb 12, 2004
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording apparatus
- Publication number 20030223147
- Publication date Dec 4, 2003
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive
- Publication number 20030189774
- Publication date Oct 9, 2003
- Takehiko Hamaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Data decoding method and circuit and information recording and repr...
- Publication number 20030151838
- Publication date Aug 14, 2003
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Partial response demodulating method and apparatus using the same
- Publication number 20020064242
- Publication date May 30, 2002
- Seiichi Mita
- G11 - INFORMATION STORAGE
Information Patent Application
Apparatus, signal-processing circuit and device for magnetic record...
- Publication number 20020060869
- Publication date May 23, 2002
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Method of servo writing for magnetic recording system, magnetic rec...
- Publication number 20020057509
- Publication date May 16, 2002
- Hitachi, Ltd.
- Yasutaka Nishida
- G11 - INFORMATION STORAGE
Information Patent Application
Decoding circuit and information processing apparatus
- Publication number 20020040462
- Publication date Apr 4, 2002
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Device and signal processing circuit for magnetic recording, magnet...
- Publication number 20020012185
- Publication date Jan 31, 2002
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Signal processing circuit free from erroneuos data and the informat...
- Publication number 20020003675
- Publication date Jan 10, 2002
- Hitachi, Ltd.
- Futoshi Tomiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Signal processing circuit free from erroneous data and the informat...
- Publication number 20010033444
- Publication date Oct 25, 2001
- Hitachi, Ltd.
- Futoshi Tomiyama
- G11 - INFORMATION STORAGE

Hideki Sawaguchi

Person

Patents Grantslast 30 patents

Apparatus, signal-processing circuit and device for magnetic record...

Recording format for information date, information recording/reprod...

Method of servo writing for magnetic recording system, magnetic rec...

Apparatus, signal-processing circuit and device for magnetic record...

Magnetic disk apparatus having an adjustable mechanism to compensat...

Recording format for information date, information recording/reprod...

Recording/regenerating device, method of encoding error correction,...

Apparatus, signal-processing circuit and device for magnetic record...

Magnetic disk drive

Method of servo writing for magnetic recording system, magnetic rec...

Signal processing method and signal processing circuit

Device and signal processing circuit for magnetic recording, magnet...

Data decoding method and circuit and information recording and repr...

Magnetic recording apparatus

Method of servo writing for magnetic recording system, magnetic rec...

Data recording/readback method and data recording/readback device f...

Magnetic recording apparatus

Magnetic disk device having a write head to write by shifting in a...

Signal processing circuit

Magnetic disk apparatus having an adjustable mechanism to compensat...

Data decoding method and circuit and information recording and repr...

Device and signal processing circuit for magnetic recording, magnet...

Data recording/reproducing signal processing circuit for magnetic r...

Decoding circuit using path sequence including feed-back type path...

Data recording/readback method and data recording/readback device f...

Partial response demodulating method and apparatus using the same

Decoding circuit and information processing apparatus

Digital write-and-read method and signal processing apparatus

Decision feedback equalization circuit

Recording/reproducing apparatus with maximum likelihood sequence es...

Patents Applicationslast 30 patents

Apparatus, signal-processing circuit and device for magnetic record...

Apparatus, signal-processing circuit and device for magnetic record...

Method of servo writing for magnetic recording system, magnetic rec...

RECORDING FORMAT FOR INFORMATION DATE, INFORMATION RECORDING/REPROD...

Magnetic disk drive

Method of servo writing for magnetic recording system, magnetic rec...

Data decoding method and circuit and information recording and repr...

Magnetic disk apparatus having an adjustable mechanism to compensat...

Magnetic recording apparatus

Device and signal processing circuit for magnetic recording, magnet...

Recording/regenerating device, method of encoding error correction,...

Signal processing method and signal processing circuit

Recording format for information date, information recording/reprod...

Device and signal processing circuit for magnetic recording, magnet...

Data recording/readback method and data recording/readback device f...

Magnetic disk apparatus having an adjustable mechanism to compensat...

Magnetic recording apparatus

Magnetic disk drive

Data decoding method and circuit and information recording and repr...

Partial response demodulating method and apparatus using the same

Apparatus, signal-processing circuit and device for magnetic record...

Method of servo writing for magnetic recording system, magnetic rec...

Decoding circuit and information processing apparatus

Device and signal processing circuit for magnetic recording, magnet...

Signal processing circuit free from erroneuos data and the informat...

Signal processing circuit free from erroneous data and the informat...