Tetsuo Semba

Person

Zama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Data storage device attenuating multiple actuator coupling disturbance
- Patent number 9,934,803
- Issue date Apr 3, 2018
- Western Digital Technologies, Inc.
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device communicating servo information between servo c...
- Patent number 9,792,938
- Issue date Oct 17, 2017
- Western Digial Technologies, Inc.
- Masahito Kobayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device, control device, off-track control method, and...
- Patent number 7,035,034
- Issue date Apr 25, 2006
- International Business Machines Corporation
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device, command queue re-ordering method, and data pro...
- Patent number 7,010,653
- Issue date Mar 7, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroshi Uchida
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Rotary recording apparatus and method of controlling the apparatus
- Patent number 6,831,809
- Issue date Dec 14, 2004
- International Business Machines Corporation
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Grant
Phase technique for active damping in a servo-controlled actuator
- Patent number 6,614,613
- Issue date Sep 2, 2003
- International Business Machines Corporation
- Fu-Ying Huang
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for suppressing mechanical resonance in a disk...
- Patent number 6,219,196
- Issue date Apr 17, 2001
- International Business Machines Corporation
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
System for compensating for hard sector noise degradation of tracki...
- Patent number 6,052,345
- Issue date Apr 18, 2000
- International Business Machines Corporation
- Allen Keith Bates
- G11 - INFORMATION STORAGE
Information Patent Grant
System for compensating for hard sector noise degradation of tracki...
- Patent number 5,936,919
- Issue date Aug 10, 1999
- International Business Machines Corporation
- Allen Keith Bates
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and sytem for cancelling optical servo crosstalk in optical...
- Patent number 5,768,228
- Issue date Jun 16, 1998
- International Business Machines Corporation
- Allen Keith Bates
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk storage unit positioning control for applying DC offsets to a...
- Patent number 5,760,991
- Issue date Jun 2, 1998
- International Business Machines Corporation
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for calibrating focus and tracking error signa...
- Patent number 5,504,726
- Issue date Apr 2, 1996
- International Business Machines Corporation
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Track crossing apparatus and method using the difference between pi...
- Patent number 5,323,368
- Issue date Jun 21, 1994
- International Business Machines Corporation
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus and method for track access
- Patent number 5,317,550
- Issue date May 31, 1994
- International Business Machines Corporation
- Tetsuo Semba
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Data storage device, control device, off-track control method, and...
- Publication number 20030231423
- Publication date Dec 18, 2003
- Tetsuo Semba
- G11 - INFORMATION STORAGE
Information Patent Application
Data storage device, command queue re-ordering method, and data pro...
- Publication number 20030225969
- Publication date Dec 4, 2003
- International Business Machines Corp.
- Hiroshi Uchida
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Rotary recording apparatus and method of controlling the apparatus
- Publication number 20020159187
- Publication date Oct 31, 2002
- International Business Machines Corporation
- Naoyuki Kagami
- G11 - INFORMATION STORAGE

Tetsuo Semba

Person

Patents Grantslast 30 patents

Data storage device attenuating multiple actuator coupling disturbance

Data storage device communicating servo information between servo c...

Data storage device, control device, off-track control method, and...

Data storage device, command queue re-ordering method, and data pro...

Rotary recording apparatus and method of controlling the apparatus

Phase technique for active damping in a servo-controlled actuator

Method and apparatus for suppressing mechanical resonance in a disk...

System for compensating for hard sector noise degradation of tracki...

System for compensating for hard sector noise degradation of tracki...

Method and sytem for cancelling optical servo crosstalk in optical...

Disk storage unit positioning control for applying DC offsets to a...

Method and apparatus for calibrating focus and tracking error signa...

Track crossing apparatus and method using the difference between pi...

Apparatus and method for track access

Patents Applicationslast 30 patents

Data storage device, control device, off-track control method, and...

Data storage device, command queue re-ordering method, and data pro...

Rotary recording apparatus and method of controlling the apparatus