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Jiangang LIANG
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San Jose, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Determining absolute position on HDD spiral patterns using dual TDM...
Patent number
11,942,122
Issue date
Mar 26, 2024
Kabushiki Kaisha Toshiba
Gary W. Calfee
G11 - INFORMATION STORAGE
Information
Patent Grant
Gain scheduled controller to handle unpredictable disturbances duri...
Patent number
11,574,650
Issue date
Feb 7, 2023
Kabushiki Kaisha Toshiba
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Reducing the effect of actuator cross-coupling in split actuator dr...
Patent number
11,508,403
Issue date
Nov 22, 2022
Kabushiki Kaisha Toshiba
Gabor Szita
G11 - INFORMATION STORAGE
Information
Patent Grant
Spiral-based self-servo-write on single disk surface
Patent number
10,074,391
Issue date
Sep 11, 2018
Kabushiki Kaisha Toshiba
Zhi Wang
G11 - INFORMATION STORAGE
Information
Patent Grant
Accurate repeatable runout compensation in disk drives during seeks
Patent number
9,953,672
Issue date
Apr 24, 2018
Kabushiki Kaisha Toshiba
Gabor Szita
G11 - INFORMATION STORAGE
Information
Patent Grant
Single surface in-drive erase
Patent number
9,865,290
Issue date
Jan 9, 2018
Kabushiki Kaisha Toshiba
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Spiral write launch while servoing on reference guide spirals
Patent number
9,824,708
Issue date
Nov 21, 2017
Kabushiki Kaisha Toshiba
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Writing spirals with accurate slope on a disk drive media
Patent number
9,691,421
Issue date
Jun 27, 2017
Kabushiki Kaisha Toshiba
Gabor Szita
G11 - INFORMATION STORAGE
Information
Patent Grant
Virtual window mode for guide spiral servo demodulation
Patent number
9,640,210
Issue date
May 2, 2017
Kabushiki Kaisha Toshiba
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Accurate spiral gate positioning in the presence of large non-repea...
Patent number
9,633,682
Issue date
Apr 25, 2017
Kabushiki Kaisha Toshiba
Gabor Szita
G11 - INFORMATION STORAGE
Information
Patent Grant
Spiral pitch correction based on micro-jog variation
Patent number
9,514,774
Issue date
Dec 6, 2016
Kabushiki Kaisha Toshiba
Gabor Szita
G11 - INFORMATION STORAGE
Information
Patent Grant
Erase coarse guide spiral-based in-drive erase process
Patent number
9,311,941
Issue date
Apr 12, 2016
Kabushiki Kaisha Toshiba
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive generating a disk locked clock using radial dependent ti...
Patent number
8,934,191
Issue date
Jan 13, 2015
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive servo writing from spiral tracks using radial dependent...
Patent number
8,929,021
Issue date
Jan 6, 2015
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive selecting a global digital-to-analog setting for a plura...
Patent number
8,780,473
Issue date
Jul 15, 2014
Western Digital Technologies, Inc.
Hongchao T. Zhao
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive compensating for track squeeze by writing non-circular s...
Patent number
8,749,904
Issue date
Jun 10, 2014
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive adjusting demodulation window for spiral track using tim...
Patent number
8,724,253
Issue date
May 13, 2014
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Edge detection for disk drives
Patent number
8,687,312
Issue date
Apr 1, 2014
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive estimating repeatable runout of reference pattern based...
Patent number
8,670,206
Issue date
Mar 11, 2014
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Adaptive threshold for detecting touchdown or contamination
Patent number
8,665,546
Issue date
Mar 4, 2014
Western Digital Technologies, Inc.
Hongchao Tim Zhao
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive writing spiral tracks on a slave surface using repeatabl...
Patent number
8,537,486
Issue date
Sep 17, 2013
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Spiral slope approximation of spiral patterns written to a disk of...
Patent number
7,852,592
Issue date
Dec 14, 2010
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive detecting defective spiral servo track
Patent number
7,746,592
Issue date
Jun 29, 2010
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive demodulating a spiral track by finding a maximum correla...
Patent number
7,656,604
Issue date
Feb 2, 2010
Western Digital Technologies, Inc.
Jiangang Liang
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive servoing off of first head while determining fly height...
Patent number
7,630,162
Issue date
Dec 8, 2009
Western Digital Technologies, Inc.
Hongchao Tim Zhao
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
SPIRAL-BASED SELF-SERVO-WRITE ON SINGLE DISK SURFACE
Publication number
20180261243
Publication date
Sep 13, 2018
Kabushiki Kaisha Toshiba
Zhi WANG
G11 - INFORMATION STORAGE
Information
Patent Application
ACCURATE REPEATABLE RUNOUT COMPENSATION IN DISK DRIVES DURING SEEKS
Publication number
20180114540
Publication date
Apr 26, 2018
Kabushiki Kaisha Toshiba
Gabor SZITA
G11 - INFORMATION STORAGE
Information
Patent Application
VIRTUAL WINDOW MODE FOR GUIDE SPIRAL SERVO DEMODULATION
Publication number
20170140783
Publication date
May 18, 2017
Kabushiki Kaisha Toshiba
Jiangang LIANG
G11 - INFORMATION STORAGE
Information
Patent Application
ACCURATE SPIRAL GATE POSITIONING IN THE PRESENCE OF LARGE NON-REPEA...
Publication number
20170103778
Publication date
Apr 13, 2017
Kabushiki Kaisha Toshiba
Gabor SZITA
G11 - INFORMATION STORAGE
Information
Patent Application
WRITING SPIRALS WITH ACCURATE SLOPE ON A DISK DRIVE MEDIA
Publication number
20160293191
Publication date
Oct 6, 2016
Kabushiki Kaisha Toshiba
Gabor SZITA
G11 - INFORMATION STORAGE
Information
Patent Application
SPIRAL WRITE LAUNCH WHILE SERVOING ON REFERENCE GUIDE SPIRALS
Publication number
20160293192
Publication date
Oct 6, 2016
Kabushiki Kaisha Toshiba
Jiangang LIANG
G11 - INFORMATION STORAGE
Information
Patent Application
DISK DRIVE WRITING SPIRAL TRACKS ON A SLAVE SURFACE USING REPEATABL...
Publication number
20130038959
Publication date
Feb 14, 2013
WESTERN DIGITAL TECHNOLOGIES, INC.
JIANGANG LIANG
G11 - INFORMATION STORAGE
Information
Patent Application
DISK DRIVE SERVOING OFF OF FIRST HEAD WHILE DETERMINING FLY HEIGHT...
Publication number
20090195936
Publication date
Aug 6, 2009
WESTERN DIGITAL TECHNOLOGIES, INC.
HONGCHAO TIM ZHAO
G11 - INFORMATION STORAGE