Naoyuki Kagami

Person

Fujisawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Data storage device with closed loop extended park mode during spin...
- Patent number 11,978,482
- Issue date May 7, 2024
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device with smart ISOFET threshold voltage automatic t...
- Patent number 11,862,202
- Issue date Jan 2, 2024
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device having dual actuators and method for data egres...
- Patent number 11,837,264
- Issue date Dec 5, 2023
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual spindle motors and dual spindle motor control for data storage
- Patent number 11,823,710
- Issue date Nov 21, 2023
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device having dual actuators and method for emergency...
- Patent number 11,763,844
- Issue date Sep 19, 2023
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Grant
VCM PWM to linear mode transition offset optimization to improve PES
- Patent number 11,763,843
- Issue date Sep 19, 2023
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device with soft on-disk activation of fine actuators
- Patent number 11,749,303
- Issue date Sep 5, 2023
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device using windowed delta-sigma analog-to-digital co...
- Patent number 11,373,678
- Issue date Jun 28, 2022
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Grant
Calibrating elevator actuator for disk drive
- Patent number 11,043,243
- Issue date Jun 22, 2021
- Western Digital Technologies, Inc.
- Kexiu Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Write data protection at emergency power off
- Patent number 10,996,740
- Issue date May 4, 2021
- Western Digital Technologies, Inc.
- Hiroki Watanabe
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Write data protection at emergency power off
- Patent number 10,635,158
- Issue date Apr 28, 2020
- Western Digital Technologies, Inc.
- Hiroki Watanabe
- G06 - COMPUTING CALCULATING COUNTING
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
Control method and apparatus for reducing the effects of hard disk...
- Patent number 7,019,921
- Issue date Mar 28, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device having acceleration sensor attached to circuit...
- Patent number 6,961,202
- Issue date Nov 1, 2005
- Hitachi Global Storage Technologies Netherlands B.V.
- Gaku Ikedo
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotation recording apparatus and method of inspection thereof
- Patent number 6,937,408
- Issue date Aug 30, 2005
- Hitachi Global Storage Technologies Netherlands B.V.
- Ryoheita Hattori
- G11 - INFORMATION STORAGE
Information Patent Grant
Self-monitoring and self-healing of frequency specific position err...
- Patent number 6,937,422
- Issue date Aug 30, 2005
- Hitachi Global Technologies Netherlands B.V.
- Hien Phu Dang
- G11 - INFORMATION STORAGE
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
System and method for implementing a rotary memory device
- Patent number 6,754,019
- Issue date Jun 22, 2004
- Hitachi Global Storage Technologies Netherlands B.V.
- Akira Tokizono
- G11 - INFORMATION STORAGE
Information Patent Grant
Control method and apparatus for reducing the effects of hard disk...
- Patent number 6,707,634
- Issue date Mar 16, 2004
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for controlling the positioning of a read/write h...
- Patent number 6,690,537
- Issue date Feb 10, 2004
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive, servo control unit, and control unit
- Patent number 6,678,109
- Issue date Jan 13, 2004
- Hitachi Global Technologies
- 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 system for performing positioning control of a head actu...
- Patent number 6,567,230
- Issue date May 20, 2003
- International Business Machines Corporation
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Grant
Adaptive vibration control for servo systems in data storage devices
- Patent number 6,549,349
- Issue date Apr 15, 2003
- International Business Machines Corporation
- Sri Muthuthamby Sri-Jayantha
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for compensating a head positioning servo in a st...
- Patent number 6,529,344
- Issue date Mar 4, 2003
- International Business Machines Corporation
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device servo control apparatus and method
- Patent number 6,414,809
- Issue date Jul 2, 2002
- International Business Machines Corporation
- Tatsuya Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
System and method for stabilizing disk drive rotation control
- Patent number 6,411,056
- Issue date Jun 25, 2002
- International Business Machines Corporation
- Gaku Ikedo
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital filter, servo control unit, and disk drive
- Patent number 6,377,418
- Issue date Apr 23, 2002
- International Business Machines Corporation
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Grant
Arrangement structure of the printed circuit board and the interfac...
- Patent number 6,351,343
- Issue date Feb 26, 2002
- International Business Machines Corporation
- Yuzo Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for controlling data write operations
- Patent number 6,337,777
- Issue date Jan 8, 2002
- International Business Machines Corporation
- Nobuya Matsubara
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
DUAL SPINDLE MOTORS AND DUAL SPINDLE MOTOR CONTROL FOR DATA STORAGE
- Publication number 20240062785
- Publication date Feb 22, 2024
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Application
VCM PWM TO LINEAR MODE TRANSITION OFFSET OPTIMIZATION TO IMPROVE PES
- Publication number 20230386512
- Publication date Nov 30, 2023
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE DEVICE HAVING DUAL ACTUATORS AND METHOD FOR EMERGENCY...
- Publication number 20230386513
- Publication date Nov 30, 2023
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE DEVICE WITH SMART ISOFET THRESHOLD VOLTAGE AUTOMATIC T...
- Publication number 20230360680
- Publication date Nov 9, 2023
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE DEVICE HAVING DUAL ACTUATORS AND METHOD FOR DATA EGRES...
- Publication number 20230326484
- Publication date Oct 12, 2023
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE DEVICE HAVING DUAL ACTUATORS AND METHOD FOR EMERGENCY...
- Publication number 20230326485
- Publication date Oct 12, 2023
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
DUAL SPINDLE MOTORS AND DUAL SPINDLE MOTOR CONTROL FOR DATA STORAGE
- Publication number 20230267960
- Publication date Aug 24, 2023
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE DEVICE WITH CLOSED LOOP EXTENDED PARK MODE DURING SPIN...
- Publication number 20230230616
- Publication date Jul 20, 2023
- Western Digital Technologies, Inc.
- Brian Johnson
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE DEVICE WITH SOFT ON-DISK ACTIVATION OF FINE ACTUATORS
- Publication number 20230186947
- Publication date Jun 15, 2023
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Application
DATA STORAGE DEVICE USING WINDOWED DELTA-SIGMA ANALOG-TO-DIGITAL CO...
- Publication number 20220084548
- Publication date Mar 17, 2022
- Western Digital Technologies, Inc.
- Jaesoo Byoun
- G11 - INFORMATION STORAGE
Information Patent Application
CALIBRATING ELEVATOR ACTUATOR FOR DISK DRIVE
- Publication number 20200381016
- Publication date Dec 3, 2020
- Western Digital Technologies, Inc.
- Kexiu Liu
- G11 - INFORMATION STORAGE
Information Patent Application
WRITE DATA PROTECTION AT EMERGENCY POWER OFF
- Publication number 20200225733
- Publication date Jul 16, 2020
- Western Digital Technologies, Inc.
- Hiroki WATANABE
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Control method and apparatus for reducing the effects of hard disk...
- Publication number 20040179288
- Publication date Sep 16, 2004
- International Business Machines Corporation
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Application
Self-monitoring and self-healing of frequency specific position err...
- Publication number 20040090698
- Publication date May 13, 2004
- International Business Machines Corporation
- Hien Phu Dang
- G11 - INFORMATION STORAGE
Information Patent Application
Data storage device and circuit board to be attached to data storag...
- Publication number 20040001280
- Publication date Jan 1, 2004
- Hitachi Global Storage Technologies Netherlands B.V.
- Gaku Ikedo
- G11 - INFORMATION STORAGE
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
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
Information Patent Application
DISK DRIVE, SERVO CONTROL UNIT, AND CONTROL UNIT
- Publication number 20020135930
- Publication date Sep 26, 2002
- NAOYUKI KAGAMI
- G11 - INFORMATION STORAGE
Information Patent Application
Rotation recording apparatus and method of inspection thereof
- Publication number 20020126404
- Publication date Sep 12, 2002
- International Business Machines Corporation
- Ryoheita Hattori
- G11 - INFORMATION STORAGE
Information Patent Application
Control method and apparatus for reducing the effects of hard disk...
- Publication number 20020067562
- Publication date Jun 6, 2002
- Naoyuki Kagami
- G11 - INFORMATION STORAGE
Information Patent Application
Adaptive vibrations control for servo systems in data storage devices
- Publication number 20020034036
- Publication date Mar 21, 2002
- International Business Machines Corporation
- Sri Muthuthamby Sri-Jayantha
- G11 - INFORMATION STORAGE
Information Patent Application
System and method for implementing a rotary memory device
- Publication number 20020003676
- Publication date Jan 10, 2002
- International Business Machines Corporation
- Akira Tokizono
- G11 - INFORMATION STORAGE
Information Patent Application
Method and system for controlling the positioning of a read/write h...
- Publication number 20010053038
- Publication date Dec 20, 2001
- International Business Machines Corp.
- Naoyuki Kagami
- G11 - INFORMATION STORAGE

Naoyuki Kagami

Person

Patents Grantslast 30 patents

Data storage device with closed loop extended park mode during spin...

Data storage device with smart ISOFET threshold voltage automatic t...

Data storage device having dual actuators and method for data egres...

Dual spindle motors and dual spindle motor control for data storage

Data storage device having dual actuators and method for emergency...

VCM PWM to linear mode transition offset optimization to improve PES

Data storage device with soft on-disk activation of fine actuators

Data storage device using windowed delta-sigma analog-to-digital co...

Calibrating elevator actuator for disk drive

Write data protection at emergency power off

Write data protection at emergency power off

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

Control method and apparatus for reducing the effects of hard disk...

Data storage device having acceleration sensor attached to circuit...

Rotation recording apparatus and method of inspection thereof

Self-monitoring and self-healing of frequency specific position err...

Rotary recording apparatus and method of controlling the apparatus

System and method for implementing a rotary memory device

Control method and apparatus for reducing the effects of hard disk...

Method and system for controlling the positioning of a read/write h...

Disk drive, servo control unit, and control unit

Phase technique for active damping in a servo-controlled actuator

Method and system for performing positioning control of a head actu...

Adaptive vibration control for servo systems in data storage devices

Method and system for compensating a head positioning servo in a st...

Data storage device servo control apparatus and method

System and method for stabilizing disk drive rotation control

Digital filter, servo control unit, and disk drive

Arrangement structure of the printed circuit board and the interfac...

Method and apparatus for controlling data write operations

Patents Applicationslast 30 patents

DUAL SPINDLE MOTORS AND DUAL SPINDLE MOTOR CONTROL FOR DATA STORAGE

VCM PWM TO LINEAR MODE TRANSITION OFFSET OPTIMIZATION TO IMPROVE PES

DATA STORAGE DEVICE HAVING DUAL ACTUATORS AND METHOD FOR EMERGENCY...

DATA STORAGE DEVICE WITH SMART ISOFET THRESHOLD VOLTAGE AUTOMATIC T...

DATA STORAGE DEVICE HAVING DUAL ACTUATORS AND METHOD FOR DATA EGRES...

DATA STORAGE DEVICE HAVING DUAL ACTUATORS AND METHOD FOR EMERGENCY...

DUAL SPINDLE MOTORS AND DUAL SPINDLE MOTOR CONTROL FOR DATA STORAGE

DATA STORAGE DEVICE WITH CLOSED LOOP EXTENDED PARK MODE DURING SPIN...

DATA STORAGE DEVICE WITH SOFT ON-DISK ACTIVATION OF FINE ACTUATORS

DATA STORAGE DEVICE USING WINDOWED DELTA-SIGMA ANALOG-TO-DIGITAL CO...

CALIBRATING ELEVATOR ACTUATOR FOR DISK DRIVE

WRITE DATA PROTECTION AT EMERGENCY POWER OFF

Control method and apparatus for reducing the effects of hard disk...

Self-monitoring and self-healing of frequency specific position err...

Data storage device and circuit board to be attached to data storag...

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

Rotary recording apparatus and method of controlling the apparatus

DISK DRIVE, SERVO CONTROL UNIT, AND CONTROL UNIT

Rotation recording apparatus and method of inspection thereof

Control method and apparatus for reducing the effects of hard disk...

Adaptive vibrations control for servo systems in data storage devices

System and method for implementing a rotary memory device

Method and system for controlling the positioning of a read/write h...