Semba Tetsuo

Person

San Jose, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording disk drive with position error signal (PES) bloc...
- Patent number 9,412,403
- Issue date Aug 9, 2016
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording disk drive with adjustable data track pitch and...
- Patent number 9,349,400
- Issue date May 24, 2016
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and structure for improving performance and storage density...
- Patent number 9,324,368
- Issue date Apr 26, 2016
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Two-dimensional magnetic recording (TDMR) disk drive with varying s...
- Patent number 9,286,926
- Issue date Mar 15, 2016
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Write current and fly height adjustment for compensating media coer...
- Patent number 9,025,263
- Issue date May 5, 2015
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and structure for improving performance and storage density...
- Patent number 8,953,266
- Issue date Feb 10, 2015
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Heat-assisted magnetic recording disk drive (HAMR) with thermal sen...
- Patent number 8,842,507
- Issue date Sep 23, 2014
- HGST Netherlands B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording disk drive with frequency adjustment for misalig...
- Patent number 8,817,405
- Issue date Aug 26, 2014
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording disk with patterned nondata islands with differe...
- Patent number 8,737,002
- Issue date May 27, 2014
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for compensating vibration by adjusting track...
- Patent number 8,724,248
- Issue date May 13, 2014
- HGST Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Grant
Thermal read/write offset compensation
- Patent number 8,699,165
- Issue date Apr 15, 2014
- HGST Netherlands B.V.
- Lidu Huang
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for creating burst magnitude servo patterns with unipolar bi...
- Patent number 8,665,549
- Issue date Mar 4, 2014
- HGST Netherlands B.V.
- Thomas R. Albrecht
- G11 - INFORMATION STORAGE
Information Patent Grant
Adjusting VGA analog gain for misaligned servo sectors in a disk drive
- Patent number 8,625,231
- Issue date Jan 7, 2014
- HGST Netherlands B.V.
- Abhishek Dhanda
Information Patent Grant
Magnetic recording disk drive with rotational vibration compensatio...
- Patent number 8,379,342
- Issue date Feb 19, 2013
- HGST Netherlands B.V.
- Fu-Ying Huang
- G11 - INFORMATION STORAGE
Information Patent Grant
Patterned media with structured PES servo segments encoding local t...
- Patent number 8,363,348
- Issue date Jan 29, 2013
- HGST Netherlands B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus and method for adjusting a feed-forward signal for seek c...
- Patent number 7,826,170
- Issue date Nov 2, 2010
- Hitachi Global Storage Technologies Netherlands, B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive with hybrid analog-digital acceleration feedforward cont...
- Patent number 7,580,217
- Issue date Aug 25, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Jirou Abe
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive with support structure for air dams and disk-vibration c...
- Patent number 7,499,243
- Issue date Mar 3, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Minimizing a mechanical mode excitation utilizing a generated seek...
- Patent number 7,486,469
- Issue date Feb 3, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Hard disk drive vibration cancellation using adaptive filter
- Patent number 7,486,470
- Issue date Feb 3, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Head seek control method suppressing vibrations and rotatary record...
- Patent number 7,457,076
- Issue date Nov 25, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive with support structure for damping plates and disk-vibra...
- Patent number 7,450,339
- Issue date Nov 11, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Reducing read/write head track misregistration
- Patent number 7,450,335
- Issue date Nov 11, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording disk drive with multiple feedforward controllers...
- Patent number 7,375,916
- Issue date May 20, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive using a disturbance sensor for disturbance frequency-ide...
- Patent number 7,345,841
- Issue date Mar 18, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Eric Gordon Baugh
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive with support structure for disk-vibration capacitive sen...
- Patent number 7,292,407
- Issue date Nov 6, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual-stage actuator disk drive with optimal location of the movable...
- Patent number 7,277,258
- Issue date Oct 2, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Vibration suppression for servo control
- Patent number 7,268,968
- Issue date Sep 11, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Seek trajectory generation using adaptive filtering
- Patent number 7,206,162
- Issue date Apr 17, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording disk drive with switchable rotational vibration...
- Patent number 7,177,113
- Issue date Feb 13, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND STRUCTURE FOR IMPROVING PERFORMANCE AND STORAGE DENSITY...
- Publication number 20150138666
- Publication date May 21, 2015
- HGST NETHERLANDS B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Application
WRITE CURRENT AND FLY HEIGHT ADJUSTMENT FOR COMPENSATING MEDIA COER...
- Publication number 20150036235
- Publication date Feb 5, 2015
- HGST NETHERLANDS B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Application
IMPLEMENTING DATA FREQUENCY AND DATA BITS PER SECTOR (BPS) CALIBRAT...
- Publication number 20140320995
- Publication date Oct 30, 2014
- HGST NETHERLANDS B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Application
Disk Drive Write-Inhibit Control Using Adaptive PES Predictor
- Publication number 20140168806
- Publication date Jun 19, 2014
- HGST NETHERLANDS B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD AND STRUCTURE FOR IMPROVING PERFORMANCE AND STORAGE DENSITY...
- Publication number 20140055883
- Publication date Feb 27, 2014
- HGST NETHERLANDS B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Application
IMPLEMENTING DATA TRACK PITCH ADJUSTMENT UNDER OPERATIONAL VIBRATIO...
- Publication number 20130135764
- Publication date May 30, 2013
- Hitachi Global Storage Technologies Netherlands B.V.
- Abhishek Dhanda
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD FOR CREATING BURST MAGNITUDE SERVO PATTERNS WITH UNIPOLAR BI...
- Publication number 20130083420
- Publication date Apr 4, 2013
- Hitachi Global Storage Technologies Netherlands B.V.
- Thomas R. Albrecht
- G11 - INFORMATION STORAGE
Information Patent Application
Patterned media with structured PES servo segments encoding local t...
- Publication number 20120087037
- Publication date Apr 12, 2012
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
THERMAL READ/WRITE OFFSET COMPENSATION
- Publication number 20120002314
- Publication date Jan 5, 2012
- Lidu Huang
- G11 - INFORMATION STORAGE
Information Patent Application
APPARATUS AND METHOD FOR ADJUSTING A FEED-FORWARD SIGNAL FOR SEEK C...
- Publication number 20100067342
- Publication date Mar 18, 2010
- Tetsuo SEMBA
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC RECORDING DISK DRIVE WITH ROTATIONAL VIBRATION COMPENSATIO...
- Publication number 20100067357
- Publication date Mar 18, 2010
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Fu-Ying Huang
- G11 - INFORMATION STORAGE
Information Patent Application
DISK DRIVE WITH HYBRID ANALOG-DIGITAL ACCELERATION FEEDFORWARD CONT...
- Publication number 20080158722
- Publication date Jul 3, 2008
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Jirou Abe
- G11 - INFORMATION STORAGE
Information Patent Application
DISK DRIVE WITH SUPPORT STRUCTURE FOR DAMPING PLATES AND DISK-VIBRA...
- Publication number 20080037161
- Publication date Feb 14, 2008
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
DISK DRIVE WITH SUPPORT STRUCTURE FOR AIR DAMS AND DISK-VIBRATION C...
- Publication number 20080037162
- Publication date Feb 14, 2008
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
Reducing read/write head track misregistration
- Publication number 20080037155
- Publication date Feb 14, 2008
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording disk drive with multiple feedforward controllers...
- Publication number 20070217052
- Publication date Sep 20, 2007
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Application
DISK DRIVE USING A DISTURBANCE SENSOR FOR DISTURBANCE FREQUENCY-IDE...
- Publication number 20070183076
- Publication date Aug 9, 2007
- Eric Gordon Baugh
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC RECORDING DISK DRIVE WITH SWITCHABLE ROTATIONAL VIBRATION...
- Publication number 20070030768
- Publication date Feb 8, 2007
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Application
Dual-stage actuator disk drive with optimal location of the movable...
- Publication number 20060285256
- Publication date Dec 21, 2006
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording disk drive with patterned media and compensation...
- Publication number 20060176599
- Publication date Aug 10, 2006
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Application
Head seek control method suppressing vibrations and rotatary record...
- Publication number 20060158773
- Publication date Jul 20, 2006
- Hitachi Global Storage Technologies Netherlands
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Application
Seek trajectory generation using adaptive filtering
- Publication number 20060114601
- Publication date Jun 1, 2006
- Hitachi Global Storage Technologies Netherlands, B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Application
VIBRATION SUPPRESSION FOR SERVO CONTROL
- Publication number 20060072392
- Publication date Apr 6, 2006
- Hitachi Global Storage Technologies Netherlands, B.V.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Application
Disk drive with support structure for disk-vibration capacitive sen...
- Publication number 20060066991
- Publication date Mar 30, 2006
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
DISK DRIVE WITH CAPACITANCE SENSING OF DISK VIBRATION AND FEEDFORWA...
- Publication number 20060066985
- Publication date Mar 30, 2006
- Toshiki Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
Concurrent data recording and reproducing method, seek operation co...
- Publication number 20050141130
- Publication date Jun 30, 2005
- Hitachi Global Storage Technologies Netherlands, B.V.
- Tetsuya Tamura
- G11 - INFORMATION STORAGE

Semba Tetsuo

Person

Patents Grantslast 30 patents

Magnetic recording disk drive with position error signal (PES) bloc...

Magnetic recording disk drive with adjustable data track pitch and...

Method and structure for improving performance and storage density...

Two-dimensional magnetic recording (TDMR) disk drive with varying s...

Write current and fly height adjustment for compensating media coer...

Method and structure for improving performance and storage density...

Heat-assisted magnetic recording disk drive (HAMR) with thermal sen...

Magnetic recording disk drive with frequency adjustment for misalig...

Magnetic recording disk with patterned nondata islands with differe...

Method and apparatus for compensating vibration by adjusting track...

Thermal read/write offset compensation

Method for creating burst magnitude servo patterns with unipolar bi...

Adjusting VGA analog gain for misaligned servo sectors in a disk drive

Magnetic recording disk drive with rotational vibration compensatio...

Patterned media with structured PES servo segments encoding local t...

Apparatus and method for adjusting a feed-forward signal for seek c...

Disk drive with hybrid analog-digital acceleration feedforward cont...

Disk drive with support structure for air dams and disk-vibration c...

Minimizing a mechanical mode excitation utilizing a generated seek...

Hard disk drive vibration cancellation using adaptive filter

Head seek control method suppressing vibrations and rotatary record...

Disk drive with support structure for damping plates and disk-vibra...

Reducing read/write head track misregistration

Magnetic recording disk drive with multiple feedforward controllers...

Disk drive using a disturbance sensor for disturbance frequency-ide...

Disk drive with support structure for disk-vibration capacitive sen...

Dual-stage actuator disk drive with optimal location of the movable...

Vibration suppression for servo control

Seek trajectory generation using adaptive filtering

Magnetic recording disk drive with switchable rotational vibration...

Patents Applicationslast 30 patents

METHOD AND STRUCTURE FOR IMPROVING PERFORMANCE AND STORAGE DENSITY...

WRITE CURRENT AND FLY HEIGHT ADJUSTMENT FOR COMPENSATING MEDIA COER...

IMPLEMENTING DATA FREQUENCY AND DATA BITS PER SECTOR (BPS) CALIBRAT...

Disk Drive Write-Inhibit Control Using Adaptive PES Predictor

METHOD AND STRUCTURE FOR IMPROVING PERFORMANCE AND STORAGE DENSITY...

IMPLEMENTING DATA TRACK PITCH ADJUSTMENT UNDER OPERATIONAL VIBRATIO...

METHOD FOR CREATING BURST MAGNITUDE SERVO PATTERNS WITH UNIPOLAR BI...

Patterned media with structured PES servo segments encoding local t...

THERMAL READ/WRITE OFFSET COMPENSATION

APPARATUS AND METHOD FOR ADJUSTING A FEED-FORWARD SIGNAL FOR SEEK C...

MAGNETIC RECORDING DISK DRIVE WITH ROTATIONAL VIBRATION COMPENSATIO...

DISK DRIVE WITH HYBRID ANALOG-DIGITAL ACCELERATION FEEDFORWARD CONT...

DISK DRIVE WITH SUPPORT STRUCTURE FOR DAMPING PLATES AND DISK-VIBRA...

DISK DRIVE WITH SUPPORT STRUCTURE FOR AIR DAMS AND DISK-VIBRATION C...

Reducing read/write head track misregistration

Magnetic recording disk drive with multiple feedforward controllers...

DISK DRIVE USING A DISTURBANCE SENSOR FOR DISTURBANCE FREQUENCY-IDE...

MAGNETIC RECORDING DISK DRIVE WITH SWITCHABLE ROTATIONAL VIBRATION...

Dual-stage actuator disk drive with optimal location of the movable...

Magnetic recording disk drive with patterned media and compensation...

Head seek control method suppressing vibrations and rotatary record...

Seek trajectory generation using adaptive filtering

VIBRATION SUPPRESSION FOR SERVO CONTROL

Disk drive with support structure for disk-vibration capacitive sen...

DISK DRIVE WITH CAPACITANCE SENSING OF DISK VIBRATION AND FEEDFORWA...

Concurrent data recording and reproducing method, seek operation co...