Inventor · disambiguated record
Weldon M. Hanson
Also filed as: HANSON WELDON · HANSON WELDON M · HANSON WELDON MARK
56 granted patents·374 citations·filing 1990–2023
98Inventor score
Files withWESTERN DIGITAL TECH INC28HGST Netherlands BV9HITACHI GLOBAL STORAGE TECH6IBM5GALBRAITH RICHARD LEO4
Top patents by PatentIndex Score
56 records- 0197US10417089B2Data storage device extending erasures for LDPC-type decodingWESTERN DIGITAL TECH INC·Filed 2018·Granted Sep 17, 2019·26 cites·21 claims
- 0296US9632863B2Track error-correcting code extensionHGST Netherlands BV·Filed 2015·Granted Apr 25, 2017·19 cites·61 claims
- 0396US9059737B2Disk drive with distributed codeword blocksHGST Netherlands BV·Filed 2013·Granted Jun 16, 2015·27 cites·17 claims
- 0495US7733591B2Data storage device with data recovery process using fixed phase clocking for analog-to-digital conversionHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jun 8, 2010·26 cites·17 claims
- 0594US12099409B2Adjustable code rates and dynamic ECC in a data storage deviceWESTERN DIGITAL TECH INC·Filed 2022·Granted Sep 24, 2024·3 cites·26 claims
- 0694US11200912B1Data storage device with servo field dependent write boostWESTERN DIGITAL TECH INC·Filed 2021·Granted Dec 14, 2021·6 cites·20 claims
- 0793US11764813B1Extendable parity code matrix construction and utilization in a data storage deviceWESTERN DIGITAL TECH INC·Filed 2022·Granted Sep 19, 2023·3 cites·21 claims
- 0893US6937415B2Method and apparatus for enhanced data channel performance using read sample bufferingHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Aug 30, 2005·37 cites·16 claims
- 0992US11049520B1Data storage device employing multi-tier coding for magnetic tapeWESTERN DIGITAL TECH INC·Filed 2020·Granted Jun 29, 2021·4 cites·18 claims
- 1092US7193802B2Apparatus for providing dynamic equalizer optimizationHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Mar 20, 2007·34 cites·32 claims
- 1191US10748567B1Data storage device aborting write operation based on accumulated track squeeze metric for adjacent data trackWESTERN DIGITAL TECHNOLOGIES INC·Filed 2019·Granted Aug 18, 2020·17 cites·20 claims
- 1290US7424074B2Optimizing detector target polynomials in read/write channels to achieve best error rate performance in disk drivesHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Sep 9, 2008·10 cites·29 claims
- 1389US10606699B2Data storage device employing multi-level parity sectors for data recovery procedureWESTERN DIGITAL TECH INC·Filed 2019·Granted Mar 31, 2020·6 cites·16 claims
- 1486US12020733B2Sector metrics to estimate health of written dataWESTERN DIGITAL TECH INC·Filed 2022·Granted Jun 25, 2024·2 cites·22 claims
- 1586US9437232B1Magnetic recording disk drive with write position error signal values written in the data tracks for compensation of track misregistrationHGST Netherlands BV·Filed 2015·Granted Sep 6, 2016·8 cites·20 claims
- 1685US9111561B1Magnetic recording disk drive with write current overshoot amplitude (OSA) responsive to data transitionsHGST Netherlands BV·Filed 2014·Granted Aug 18, 2015·7 cites·15 claims
- 1785US8736996B2Implementing channel signal processing assist with ECS contact detectionCHE XIAODONG·Filed 2012·Granted May 27, 2014·8 cites·17 claims
- 1884US11138996B1Data storage device employing embedded servo sectors for magnetic tapeWESTERN DIGITAL TECH INC·Filed 2020·Granted Oct 5, 2021·2 cites·7 claims
- 1983US8503125B2Channel-source laser-pulsing system architecture for thermal-assisted recordingCONTRERAS JOHN·Filed 2011·Granted Aug 6, 2013·7 cites·20 claims
- 2083US5189566AMethod and apparatus for recovering dataIBM·Filed 1990·Granted Feb 23, 1993·38 cites·1 claims
- 2182US11811425B2Neural network soft information detector in a read channelWESTERN DIGITAL TECH INC·Filed 2021·Granted Nov 7, 2023·1 cites·22 claims
- 2282US10530390B2Data storage device employing memory efficient processing of un-converged codewordsWESTERN DIGITAL TECH INC·Filed 2018·Granted Jan 7, 2020·5 cites·15 claims
- 2381US7694205B2Method and apparatus for providing a read channel having combined parity and non-parity post processingHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Apr 6, 2010·4 cites·15 claims
- 2480US9275656B1Disk drive with channel and preamp with dynamic write-current control for write headHGST Netherlands BV·Filed 2015·Granted Mar 1, 2016·5 cites·18 claims
- 2579US8988807B1Disk drive with different data sector integrated preambles in adjacent data tracksHGST Netherlands BV·Filed 2013·Granted Mar 24, 2015·4 cites·16 claims
- 2677US5436773AEnhanced linearity range for magneto resistive transducer servo by changing the direction of the bias currentIBM·Filed 1994·Granted Jul 25, 1995·24 cites·11 claims
- 2776US8599973B2Detection of synchronization mark from output of matched filter upstream of Viterbi detectorGALBRAITH RICHARD LEO·Filed 2008·Granted Dec 3, 2013·3 cites·26 claims
- 2872US12430202B2Nested error correction codes for DNA data storageWESTERN DIGITAL TECH INC·Filed 2023·Granted Sep 30, 2025·0 cites·20 claims
- 2972US11055171B2Data storage device employing multi-level parity sectors for data recovery procedureWESTERN DIGITAL TECH INC·Filed 2020·Granted Jul 6, 2021·1 cites·12 claims
- 3072US8982491B1Disk drive with different synchronization fields and synchronization marks in the data sector preambles in adjacent data tracksHGST Netherlands BV·Filed 2013·Granted Mar 17, 2015·2 cites·12 claims
- 3171US8300342B2Multi-bit phase alignment for synchronization mark pattern matchingGALBRAITH RICHARD LEO·Filed 2008·Granted Oct 30, 2012·2 cites·17 claims
- 3269US12474994B2Preprocessing for correcting insertions and deletions in DNA data storageWESTERN DIGITAL TECH INC·Filed 2023·Granted Nov 18, 2025·0 cites·20 claims
- 3369US10373645B2Data storage device dynamically generating extended redundancy over interleaves of a data trackWESTERN DIGITAL TECH INC·Filed 2017·Granted Aug 6, 2019·2 cites·20 claims
- 3469US6868515B2Formatting method and apparatus for a direct access storage deviceHITACHI GLOBAL STORAGE TECH·Filed 2001·Granted Mar 15, 2005·7 cites·32 claims
- 3568US12399778B2Channel circuit with zero force equalizerWESTERN DIGITAL TECH INC·Filed 2023·Granted Aug 26, 2025·0 cites·21 claims
- 3668US10008229B2Implementing enhanced track following during read back using head asymmetry metrics in hard disk drivesWESTERN DIGITAL TECH INC·Filed 2016·Granted Jun 26, 2018·2 cites·17 claims
- 3767US10783913B1Data storage device measuring air bearing resonant frequency to calibrate fly height touchdown powerWESTERN DIGITAL TECH INC·Filed 2019·Granted Sep 22, 2020·2 cites·19 claims
- 3867US6577460B1Method and apparatus for improving track format efficiency in a direct access storage deviceIBM·Filed 2000·Granted Jun 10, 2003·6 cites·23 claims
- 3966US7395482B2Data storage systemsIBM·Filed 2003·Granted Jul 1, 2008·5 cites·4 claims
- 4063US12445142B2Channel circuit with asynchronous sampling from an oversampled analog-to-digital converterWESTERN DIGITAL TECH INC·Filed 2023·Granted Oct 14, 2025·0 cites·22 claims
- 4163US11289123B2Magnetic recording tape having embedded servo sectors on data tracksWESTERN DIGITAL TECH INC·Filed 2021·Granted Mar 29, 2022·0 cites·19 claims
- 4262US6747829B2Pad eliminating decoding method and apparatus for a direct access storage deviceIBM·Filed 2001·Granted Jun 8, 2004·8 cites·25 claims
- 4357US12028091B2Adjustable code rates and dynamic ECC in a data storage device with write verificationWESTERN DIGITAL TECH INC·Filed 2022·Granted Jul 2, 2024·0 cites·20 claims
- 4456US11948602B2Offset spiral data track format for data storage devicesWESTERN DIGITAL TECH INC·Filed 2022·Granted Apr 2, 2024·0 cites·22 claims
- 4556US11373682B2Data storage device reading data from magnetic tape in forward and reverse directionWESTERN DIGITAL TECH INC·Filed 2021·Granted Jun 28, 2022·0 cites·22 claims
- 4654US11716097B2Signal correction using soft information in a data channelWESTERN DIGITAL TECH INC·Filed 2021·Granted Aug 1, 2023·0 cites·21 claims
- 4754US9218847B2System and method for testing data storage systems utilizing micro-transitionsHGST Netherlands BV·Filed 2013·Granted Dec 22, 2015·0 cites·29 claims
- 4853US11386927B1Data storage device synchronizing first channel based on sync mark detected in second channelWESTERN DIGITAL TECH INC·Filed 2021·Granted Jul 12, 2022·0 cites·20 claims
- 4950US11756581B1Position and risk reconstruction in shingled magnetic recording data storage devicesWESTERN DIGITAL TECH INC·Filed 2022·Granted Sep 12, 2023·0 cites·22 claims
- 5050US11482247B2Data storage device with history dependent write boostWESTERN DIGITAL TECH INC·Filed 2021·Granted Oct 25, 2022·0 cites·20 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
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