Inventor · disambiguated record
Chun Sei Tsai
Also filed as: TSAI CHUN S · TSAI CHUN SEI
39 granted patents·2 pending applications·2,829 citations·filing 2005–2022
98Inventor score
Top patents by PatentIndex Score
41 records- 0199US8174780B1Disk drive biasing a refresh monitor with write parameter of a write operationTSAI CHUN SEI·Filed 2007·Granted May 8, 2012·146 cites·14 claims
- 0299US8004785B1Disk drive write verifying unformatted data sectorsWESTERN DIGITAL TECH INC·Filed 2008·Granted Aug 23, 2011·138 cites·14 claims
- 0399US7982993B1Disk drive employing different servo TPI to data TPI ratios across the disk surfaceWESTERN DIGITAL TECH INC·Filed 2008·Granted Jul 19, 2011·142 cites·20 claims
- 0499US7945727B2Disk drive refreshing zones in segments to sustain target throughput of host commandsWESTERN DIGITAL TECH INC·Filed 2007·Granted May 17, 2011·140 cites·21 claims
- 0599US7933087B1Disk drive storing parameters of a write operation in a plurality of data sectorsWESTERN DIGITAL TECH INC·Filed 2008·Granted Apr 26, 2011·135 cites·23 claims
- 0699US7852596B2Disk drive returning dummy data to a host when reading an unwritten data sectorWESTERN DIGITAL TECH INC·Filed 2009·Granted Dec 14, 2010·134 cites·26 claims
- 0798US8612798B1Hybrid drive storing write data in non-volatile semiconductor memory if write verify of disk failsTSAI CHUN SEI·Filed 2010·Granted Dec 17, 2013·143 cites·16 claims
- 0898US8429343B1Hybrid drive employing non-volatile semiconductor memory to facilitate refreshing diskTSAI CHUN SEI·Filed 2010·Granted Apr 23, 2013·136 cites·14 claims
- 0998US8427771B1Hybrid drive storing copy of data in non-volatile semiconductor memory for suspect disk data sectorsTSAI CHUN SEI·Filed 2010·Granted Apr 23, 2013·135 cites·21 claims
- 1098US8320067B1Refresh operations using write/read commandsTSAI CHUN SEI·Filed 2010·Granted Nov 27, 2012·146 cites·23 claims
- 1198US7929234B1Disk drive prioritizing in-the-field defect scanning based on number of write operations in each of a plurality of defect zonesWESTERN DIGITAL TECH INC·Filed 2009·Granted Apr 19, 2011·157 cites·24 claims
- 1297US10783911B1Data storage device bank writing servo sectors for interleaved servo control processingWESTERN DIGITAL TECH INC·Filed 2020·Granted Sep 22, 2020·13 cites·20 claims
- 1397US8751699B1Systems and methods for indication of activity status of a storage deviceTSAI CHUN SEI·Filed 2011·Granted Jun 10, 2014·73 cites·28 claims
- 1497US7212374B1Disk drive to characterize misaligned servo wedgesWESTERN DIGITAL TECH INC·Filed 2005·Granted May 1, 2007·118 cites·25 claims
- 1596US8797667B1Disk drive calibrating bias signal for touchdown sensorWESTERN DIGITAL TECH INC·Filed 2012·Granted Aug 5, 2014·52 cites·18 claims
- 1696US8793532B1Hard-disk drive work load profiling and capturing systems and methodsTSAI CHUN SEI·Filed 2012·Granted Jul 29, 2014·67 cites·26 claims
- 1796US8031423B1Disk drive generating actual data TPI profile by combining segments of predetermined data TPI profilesWESTERN DIGITAL TECH INC·Filed 2009·Granted Oct 4, 2011·121 cites·14 claims
- 1896US7974029B2Disk drive biasing refresh zone counters based on write commandsWESTERN DIGITAL TECH INC·Filed 2009·Granted Jul 5, 2011·147 cites·24 claims
- 1995US10878844B1Data storage device controlling head fly height based on temperatureWESTERN DIGITAL TECH INC·Filed 2020·Granted Dec 29, 2020·7 cites·19 claims
- 2095US9418699B1Management of sequentially written dataWESTERN DIGITAL TECH INC·Filed 2015·Granted Aug 16, 2016·23 cites·21 claims
- 2195US8116025B1Disk drive executing retry operation after adjusting jog value in response to gain controlCHAN TOM S·Filed 2008·Granted Feb 14, 2012·144 cites·18 claims
- 2294US8780478B1Grease wear leveling for a disk driveWESTERN DIGITAL TECH INC·Filed 2012·Granted Jul 15, 2014·60 cites·20 claims
- 2394US8694841B1Methods and devices for preventing potential media errors from growing thermal asperitiesCHUNG HEON HO·Filed 2012·Granted Apr 8, 2014·71 cites·32 claims
- 2494US8271692B1Throttled command completion timeDINH PETER H·Filed 2010·Granted Sep 18, 2012·158 cites·20 claims
- 2594US7209310B1Disk drive identifying starting track by performing multiple load operationsWESTERN DIGITAL TECH INC·Filed 2005·Granted Apr 24, 2007·29 cites·16 claims
- 2692US8149528B1Disk drive connecting defect shapes to preempt data lossSURATMAN DODY·Filed 2009·Granted Apr 3, 2012·142 cites·20 claims
- 2789US9075714B1Electronic system with data management mechanism and method of operation thereofWESTERN DIGITAL TECH INC·Filed 2014·Granted Jul 7, 2015·12 cites·29 claims
- 2886US9036283B1Data storage device with selective write to a first storage media or a second storage mediaWESTERN DIGITAL TECH INC·Filed 2014·Granted May 19, 2015·7 cites·32 claims
- 2984US9269393B1Electronic system with data refresh mechanism and method of operation thereofWESTERN DIGITAL TECH INC·Filed 2014·Granted Feb 23, 2016·7 cites·24 claims
- 3083US9437242B1Data storage device employing different frequency preambles in adjacent data tracksWESTERN DIGITAL TECH INC·Filed 2015·Granted Sep 6, 2016·7 cites·24 claims
- 3180US9053747B1Disk drive calibrating failure threshold based on noise power effect on failure detection metricWESTERN DIGITAL TECH INC·Filed 2013·Granted Jun 9, 2015·5 cites·24 claims
- 3279US9202517B1Disk drive calibrating defect threshold based on statistical quality metric measured for reference tracksWESTERN DIGITAL TECH INC·Filed 2013·Granted Dec 1, 2015·6 cites·20 claims
- 3373US9117489B1Data storage device screening heads by verifying defects after defect scanWESTERN DIGITAL TECH INC·Filed 2014·Granted Aug 25, 2015·3 cites·16 claims
- 3470US9251823B1Data storage device delaying seek operation to avoid thermal asperitiesWESTERN DIGITAL TECH INC·Filed 2014·Granted Feb 2, 2016·2 cites·12 claims
- 3569US9298380B1Data storage device with selective write to a first storage media or a second storage mediaWESTERN DIGITAL TECH INC·Filed 2015·Granted Mar 29, 2016·2 cites·20 claims
- 3662US8902533B1Disk drive detecting different asperities on a disk using different sensor bias settingsWESTERN DIGITAL TECH INC·Filed 2013·Granted Dec 2, 2014·1 cites·24 claims
- 3748US12475365B2Embedded multi-attribute machine learning for storage devicesWESTERN DIGITAL TECH INC·Filed 2021·Granted Nov 18, 2025·0 cites·20 claims
- 3848US11543981B2Data storage device self-configuring based on customer prediction modelWESTERN DIGITAL TECH INC·Filed 2020·Granted Jan 3, 2023·0 cites·19 claims
- 3946US2022076160A1Embedded Machine Learning for Storage DevicesWESTERN DIGITAL TECH INC·Filed 2021·Application pending·0 cites
- 4045US11657847B1Dynamic track interference write counting for magnetic disksWESTERN DIGITAL TECH INC·Filed 2022·Granted May 23, 2023·0 cites·20 claims
- 4139US2022121985A1Machine Learning Supplemented Storage Device CalibrationWESTERN DIGITAL TECH INC·Filed 2021·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →