Takao Sugawara

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Differential interface transmission of fly-height control data
- Patent number 10,943,615
- Issue date Mar 9, 2021
- Marvell Asia Pte, Ltd.
- Takahiro Inoue
- G11 - INFORMATION STORAGE
Information Patent Grant
Record reproduction method, apparatus, and circuit for using error...
- Patent number 7,590,929
- Issue date Sep 15, 2009
- Fujitsu Limited
- Toshihiko Morita
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and reproducing apparatus and method, and sig...
- Patent number 7,515,369
- Issue date Apr 7, 2009
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of and apparatus for reading recording medium, harddisk cont...
- Patent number 7,434,136
- Issue date Oct 7, 2008
- Fujitsu Limited
- Kazuhito Ichihara
- G11 - INFORMATION STORAGE
Information Patent Grant
Timing recovery method and storage apparatus for suppressing contro...
- Patent number 7,355,938
- Issue date Apr 8, 2008
- Fujitsu Limited
- Akihiro Yamazaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Training method for recording medium reproduction equalizer and rec...
- Patent number 7,286,596
- Issue date Oct 23, 2007
- Fujitsu Limited
- Masaru Sawada
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording and reproducing apparatus, signal decoding circuit, error...
- Patent number 7,237,173
- Issue date Jun 26, 2007
- Fujitsu Limited
- Toshihiko Morita
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording and reproducing apparatus
- Patent number 7,138,931
- Issue date Nov 21, 2006
- Fujitsu Limited
- Toshio Ito
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and reproducing apparatus, signal decoding ci...
- Patent number 7,110,199
- Issue date Sep 19, 2006
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head testing apparatus
- Patent number 7,085,666
- Issue date Aug 1, 2006
- Fujitsu Limited
- Taketoshi Aratani
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and reproducing apparatus and method, and sig...
- Patent number 7,054,088
- Issue date May 30, 2006
- Fujitsu Limited
- Akihiro Yamazaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of and apparatus for recording/reading information, circuit...
- Patent number 7,035,029
- Issue date Apr 25, 2006
- Fujitsu Limited
- Masaru Sawada
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording and reproducing apparatus and method and sign...
- Patent number 7,031,090
- Issue date Apr 18, 2006
- Fujitsu Limited
- Kazuhito Ichihara
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage apparatus and magnetic recording method
- Patent number 6,532,122
- Issue date Mar 11, 2003
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Grant
Detecting circuit for read signal from magnetic recording system us...
- Patent number 6,501,610
- Issue date Dec 31, 2002
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal regenerating apparatus having asymmetrical signal detection...
- Patent number 6,052,245
- Issue date Apr 18, 2000
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Grant
Construction for attaching a disk in a disk drive
- Patent number 6,025,973
- Issue date Feb 15, 2000
- Fujitsu Limited
- Yoshifumi Mizoshita
- G11 - INFORMATION STORAGE
Information Patent Grant
Shaft construction of a disk drive
- Patent number 6,016,237
- Issue date Jan 18, 2000
- Fujitsu Limited
- Yoshifumi Mizoshita
- G11 - INFORMATION STORAGE
Information Patent Grant
Clock phase acquisition/tracking device and phase acquisition method
- Patent number 5,892,474
- Issue date Apr 6, 1999
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive having a thickness equal to an IC memory card
- Patent number 5,880,904
- Issue date Mar 9, 1999
- Fujitsu Limited
- Yoshifumi Mizoshita
- G11 - INFORMATION STORAGE
Information Patent Grant
Asymmetrical signal detector and signal regenerating apparatus usin...
- Patent number 5,790,335
- Issue date Aug 4, 1998
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Grant
Head actuator
- Patent number 5,608,592
- Issue date Mar 4, 1997
- Fujitsu Limited
- Yoshifumi Mizoshita
- G11 - INFORMATION STORAGE
Information Patent Grant
Maximum-likelihood decoding method and device
- Patent number 5,432,820
- Issue date Jul 11, 1995
- Fujitsu Limited
- Takao Sugawara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Viterbi decoding system including variable-order equalizer
- Patent number 5,287,385
- Issue date Feb 15, 1994
- Fujitsu Limited
- Takao Sugawara
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
DIFFERENTIAL INTERFACE TRANSMISSION OF FLY-HEIGHT CONTROL DATA
- Publication number 20200202894
- Publication date Jun 25, 2020
- Marvell World Trade Ltd.
- Takahiro Inoue
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording and reproducing apparatus and method, and sig...
- Publication number 20060181797
- Publication date Aug 17, 2006
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Application
Recording and reproducing apparatus
- Publication number 20050225458
- Publication date Oct 13, 2005
- FUJITSU LIMITED
- Toshio Ito
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Training method for recording medium reproduction equalizer and rec...
- Publication number 20050099907
- Publication date May 12, 2005
- FUJITSU LIMITED
- Masaru Sawada
- G11 - INFORMATION STORAGE
Information Patent Application
Method, apparatus, and circuit for record reproduction
- Publication number 20050066261
- Publication date Mar 24, 2005
- FUJITSU LIMITED
- Toshihiko Morita
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method of and apparatus for reading recording medium, harddisk cont...
- Publication number 20040187066
- Publication date Sep 23, 2004
- FUJITSU LIMITED
- Kazuhito Ichihara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method of and apparatus for recording/reading information, circuit...
- Publication number 20040179287
- Publication date Sep 16, 2004
- FUJITSU LIMITED
- Masaru Sawada
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head testing apparatus
- Publication number 20040104721
- Publication date Jun 3, 2004
- FUJITSU LIMITED
- Taketoshi Aratani
- G11 - INFORMATION STORAGE
Information Patent Application
Timing recovery method and storage apparatus
- Publication number 20040030948
- Publication date Feb 12, 2004
- FUJITSU LIMITED
- Akihiro Yamazaki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Information recording and reproducing apparatus and method, and sig...
- Publication number 20030137765
- Publication date Jul 24, 2003
- FUJITSU LIMITED
- Akihiro Yamazaki
- G11 - INFORMATION STORAGE
Information Patent Application
Recording and reproducing apparatus, signal decoding circuit, error...
- Publication number 20030066020
- Publication date Apr 3, 2003
- FUJITSU LIMITED
- Toshihiko Morita
- G11 - INFORMATION STORAGE
Information Patent Application
Recording and reproducing apparatus, signal decoding circuit, error...
- Publication number 20030043487
- Publication date Mar 6, 2003
- FUJITSU LIMITED
- Toshihiko Morita
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording and reproducing apparatus signal decoding cir...
- Publication number 20030030930
- Publication date Feb 13, 2003
- FUJITSU LIMITED
- Takao Sugawara
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording and reproducing apparatus and method and sign...
- Publication number 20030026028
- Publication date Feb 6, 2003
- FUJITSU LIMITED
- Kazuhito Ichihara
- G11 - INFORMATION STORAGE

Takao Sugawara

Person

Patents Grantslast 30 patents

Differential interface transmission of fly-height control data

Record reproduction method, apparatus, and circuit for using error...

Information recording and reproducing apparatus and method, and sig...

Method of and apparatus for reading recording medium, harddisk cont...

Timing recovery method and storage apparatus for suppressing contro...

Training method for recording medium reproduction equalizer and rec...

Recording and reproducing apparatus, signal decoding circuit, error...

Recording and reproducing apparatus

Information recording and reproducing apparatus, signal decoding ci...

Magnetic head testing apparatus

Information recording and reproducing apparatus and method, and sig...

Method of and apparatus for recording/reading information, circuit...

Information recording and reproducing apparatus and method and sign...

Data storage apparatus and magnetic recording method

Detecting circuit for read signal from magnetic recording system us...

Signal regenerating apparatus having asymmetrical signal detection...

Construction for attaching a disk in a disk drive

Shaft construction of a disk drive

Clock phase acquisition/tracking device and phase acquisition method

Disk drive having a thickness equal to an IC memory card

Asymmetrical signal detector and signal regenerating apparatus usin...

Head actuator

Maximum-likelihood decoding method and device

Viterbi decoding system including variable-order equalizer

Patents Applicationslast 30 patents

DIFFERENTIAL INTERFACE TRANSMISSION OF FLY-HEIGHT CONTROL DATA

Information recording and reproducing apparatus and method, and sig...

Recording and reproducing apparatus

Training method for recording medium reproduction equalizer and rec...

Method, apparatus, and circuit for record reproduction

Method of and apparatus for reading recording medium, harddisk cont...

Method of and apparatus for recording/reading information, circuit...

Magnetic head testing apparatus

Timing recovery method and storage apparatus

Information recording and reproducing apparatus and method, and sig...

Recording and reproducing apparatus, signal decoding circuit, error...

Recording and reproducing apparatus, signal decoding circuit, error...

Information recording and reproducing apparatus signal decoding cir...

Information recording and reproducing apparatus and method and sign...