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CHUN SEI TSAI
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TUSTIN, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Dynamic track interference write counting for magnetic disks
Patent number
11,657,847
Issue date
May 23, 2023
Western Digital Technologies, Inc.
Jillian D. Passioukov
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Information
Patent Grant
Data storage device self-configuring based on customer prediction m...
Patent number
11,543,981
Issue date
Jan 3, 2023
Western Digital Technologies, Inc.
Chun S. Tsai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Data storage device controlling head fly height based on temperature
Patent number
10,878,844
Issue date
Dec 29, 2020
Western Digital Technologies, Inc.
Chun Sei Tsai
G11 - INFORMATION STORAGE
Information
Patent Grant
Data storage device bank writing servo sectors for interleaved serv...
Patent number
10,783,911
Issue date
Sep 22, 2020
Western Digital Technologies, Inc.
Chun S. Tsai
G11 - INFORMATION STORAGE
Information
Patent Grant
Data storage device employing different frequency preambles in adja...
Patent number
9,437,242
Issue date
Sep 6, 2016
Western Digital Technologies, Inc.
Thao Hieu Banh
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Information
Patent Grant
Management of sequentially written data
Patent number
9,418,699
Issue date
Aug 16, 2016
Western Digital Technologies, Inc.
Kent William Gibbons
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Information
Patent Grant
Data storage device with selective write to a first storage media o...
Patent number
9,298,380
Issue date
Mar 29, 2016
Western Digital Technologies, Inc.
Chun Sei Tsai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic system with data refresh mechanism and method of operati...
Patent number
9,269,393
Issue date
Feb 23, 2016
Western Digital Technologies, Inc.
Steven L. Webb
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Information
Patent Grant
Data storage device delaying seek operation to avoid thermal asperi...
Patent number
9,251,823
Issue date
Feb 2, 2016
Western Digital Technologies, Inc.
Kexiu Liu
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Information
Patent Grant
Disk drive calibrating defect threshold based on statistical qualit...
Patent number
9,202,517
Issue date
Dec 1, 2015
Western Digital Technologies, Inc.
Carl E. Barlow
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Information
Patent Grant
Data storage device screening heads by verifying defects after defe...
Patent number
9,117,489
Issue date
Aug 25, 2015
Western Digital Technologies, Inc.
Dean V. Dang
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Information
Patent Grant
Electronic system with data management mechanism and method of oper...
Patent number
9,075,714
Issue date
Jul 7, 2015
Western Digital Technologies, Inc.
Chun Sei Tsai
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive calibrating failure threshold based on noise power effec...
Patent number
9,053,747
Issue date
Jun 9, 2015
Western Digitial Technologies, Inc.
Baoliang Zhang
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Information
Patent Grant
Data storage device with selective write to a first storage media o...
Patent number
9,036,283
Issue date
May 19, 2015
Western Digital Technologies, Inc.
Chun Sei Tsai
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive detecting different asperities on a disk using different...
Patent number
8,902,533
Issue date
Dec 2, 2014
Western Digital Technologies, Inc.
Carl E. Barlow
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Information
Patent Grant
Disk drive calibrating bias signal for touchdown sensor
Patent number
8,797,667
Issue date
Aug 5, 2014
Western Digital Technologies, Inc.
Carl E. Barlow
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Information
Patent Grant
Hard-disk drive work load profiling and capturing systems and methods
Patent number
8,793,532
Issue date
Jul 29, 2014
Western Digital Technologies, Inc.
Chun Sei Tsai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Grease wear leveling for a disk drive
Patent number
8,780,478
Issue date
Jul 15, 2014
Western Digital Technologies, Inc.
Sang Huynh
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Information
Patent Grant
Systems and methods for indication of activity status of a storage...
Patent number
8,751,699
Issue date
Jun 10, 2014
Western Digital Technologies, Inc.
Chun Sei Tsai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Methods and devices for preventing potential media errors from grow...
Patent number
8,694,841
Issue date
Apr 8, 2014
Western Digital Technologies, Inc.
Heon Ho Chung
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Information
Patent Grant
Hybrid drive storing write data in non-volatile semiconductor memor...
Patent number
8,612,798
Issue date
Dec 17, 2013
Western Digital Technologies, Inc.
Chun Sei Tsai
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Information
Patent Grant
Hybrid drive employing non-volatile semiconductor memory to facilit...
Patent number
8,429,343
Issue date
Apr 23, 2013
Western Digital Technologies, Inc.
Chun Sei Tsai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Hybrid drive storing copy of data in non-volatile semiconductor mem...
Patent number
8,427,771
Issue date
Apr 23, 2013
Western Digital Technologies, Inc.
Chun Sei Tsai
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Information
Patent Grant
Refresh operations using write/read commands
Patent number
8,320,067
Issue date
Nov 27, 2012
Western Digital Technologies, Inc.
Chun Sei Tsai
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Information
Patent Grant
Throttled command completion time
Patent number
8,271,692
Issue date
Sep 18, 2012
Western Digital Technologies, Inc.
Peter H. Dinh
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Information
Patent Grant
Disk drive biasing a refresh monitor with write parameter of a writ...
Patent number
8,174,780
Issue date
May 8, 2012
Western Digital Technologies, Inc.
Chun Sei Tsai
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Information
Patent Grant
Disk drive connecting defect shapes to preempt data loss
Patent number
8,149,528
Issue date
Apr 3, 2012
Western Digital Technologies, Inc.
Dody Suratman
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Information
Patent Grant
Disk drive executing retry operation after adjusting jog value in r...
Patent number
8,116,025
Issue date
Feb 14, 2012
Western Digital Technologies, Inc.
Tom S. Chan
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Information
Patent Grant
Disk drive generating actual data TPI profile by combining segments...
Patent number
8,031,423
Issue date
Oct 4, 2011
Western Digital Technologies, Inc.
Chun Sei Tsai
G11 - INFORMATION STORAGE
Information
Patent Grant
Disk drive write verifying unformatted data sectors
Patent number
8,004,785
Issue date
Aug 23, 2011
Western Digital Technologies, Inc.
Chun Sei Tsai
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Machine Learning Supplemented Storage Device Calibration
Publication number
20220121985
Publication date
Apr 21, 2022
Western Digital Technologies, Inc.
Jonathan Lloyd
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Information
Patent Application
Embedded Multi-Attribute Machine Learning For Storage Devices
Publication number
20220121930
Publication date
Apr 21, 2022
Western Digital Technologies, Inc.
Jonathan Lloyd
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Information
Patent Application
Embedded Machine Learning for Storage Devices
Publication number
20220076160
Publication date
Mar 10, 2022
Western Digital Technologies, Inc.
Jonathan Lloyd
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Information
Patent Application
DATA STORAGE DEVICE SELF-CONFIGURING BASED ON CUSTOMER PREDICTION M...
Publication number
20210389889
Publication date
Dec 16, 2021
Western Digital Technologies, Inc.
Chun S. Tsai
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
DISK DRIVE BIASING REFRESH ZONE COUNTERS BASED ON WRITE COMMANDS
Publication number
20110026159
Publication date
Feb 3, 2011
WESTERN DIGITAL TECHNOLOGIES, INC.
CHUN SEI TSAI
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Information
Patent Application
DISK DRIVE RETURNING DUMMY DATA TO A HOST WHEN READING AN UNWRITTEN...
Publication number
20100214682
Publication date
Aug 26, 2010
WESTERN DIGITAL TECHNOLOGIES, INC.
WILLIAM B. BOYLE
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Information
Patent Application
DISK DRIVE REFRESHING ZONES IN SEGMENTS TO SUSTAIN TARGET THROUGHPU...
Publication number
20090027799
Publication date
Jan 29, 2009
WESTERN DIGITAL TECHNOLOGIES, INC.
MICHAEL S. ROTHBERG
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