Assignee
WESTERN DIGITAL TECH INC
US·4,853 granted patents·545 pending applications·96,165 citations·filing 1997–2025
Top patents by PatentIndex Score
5,398 records- 0199US11283006B1Methods and apparatus of high moment free layers for magnetic tunnel junctionsWESTERN DIGITAL TECH INC·Filed 2020·Granted Mar 22, 2022·6 cites·29 claims
- 0299US11170869B1Dual data protection in storage devicesWESTERN DIGITAL TECH INC·Filed 2020·Granted Nov 9, 2021·20 cites·18 claims
- 0399US11126378B1Rate limit on the transitions of zones to openWESTERN DIGITAL TECH INC·Filed 2020·Granted Sep 21, 2021·21 cites·20 claims
- 0499US11087785B1Effective rear hard bias for dual free layer read headsWESTERN DIGITAL TECH INC·Filed 2020·Granted Aug 10, 2021·15 cites·18 claims
- 0599US10991444B1Tiered read reference calibrationWESTERN DIGITAL TECH INC·Filed 2020·Granted Apr 27, 2021·31 cites·20 claims
- 0699US10978100B1Belt-driven rotary cam elevator mechanism for reduced-head data storage deviceWESTERN DIGITAL TECH INC·Filed 2020·Granted Apr 13, 2021·13 cites·18 claims
- 0799US10950260B1Magnetoresistive sensor with improved magnetic properties and magnetostriction controlWESTERN DIGITAL TECH INC·Filed 2020·Granted Mar 16, 2021·7 cites·20 claims
- 0899US10839833B1Spin transfer torque device with oxide layer beneath the seed layerWESTERN DIGITAL TECH INC·Filed 2020·Granted Nov 17, 2020·7 cites·20 claims
- 0999US10366714B1Magnetic write head for providing spin-torque-assisted write field enhancementWESTERN DIGITAL TECH INC·Filed 2017·Granted Jul 30, 2019·95 cites·21 claims
- 1099US10210888B1Dual spin-orbit torque oscillator in magnetic recordingWESTERN DIGITAL TECH INC·Filed 2017·Granted Feb 19, 2019·77 cites·8 claims
- 1199US8711027B1Analog-to-digital converter with input voltage biasing DC level of resonant oscillatorWESTERN DIGITAL TECH INC·Filed 2012·Granted Apr 29, 2014·96 cites·22 claims
- 1299US8706985B1System and method for optimizing garbage collection in data storageWESTERN DIGITAL TECH INC·Filed 2013·Granted Apr 22, 2014·166 cites·14 claims
- 1399US8350628B1Gate speed regulator dithering ring oscillator to match critical path circuitWESTERN DIGITAL TECH INC·Filed 2011·Granted Jan 8, 2013·171 cites·15 claims
- 1499US8004785B1Disk drive write verifying unformatted data sectorsWESTERN DIGITAL TECH INC·Filed 2008·Granted Aug 23, 2011·138 cites·14 claims
- 1599US7982993B1Disk 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
- 1699US7945727B2Disk 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
- 1799US7933087B1Disk 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
- 1899US7929238B1Disk drive seeking with a fixed rate clock when crossing servo zones to facilitate zoned servo sectorsWESTERN DIGITAL TECH INC·Filed 2008·Granted Apr 19, 2011·141 cites·20 claims
- 1999US7907364B2Disk drive including a delay circuit to provide a delayed reset signalWESTERN DIGITAL TECH INC·Filed 2008·Granted Mar 15, 2011·132 cites·25 claims
- 2099US7872822B1Disk drive refreshing zones based on serpentine access of disk surfacesWESTERN DIGITAL TECH INC·Filed 2007·Granted Jan 18, 2011·155 cites·19 claims
- 2199US7859782B1Selecting highest reliability sync mark in a sync mark window of a spiral servo track crossingWESTERN DIGITAL TECH INC·Filed 2008·Granted Dec 28, 2010·138 cites·16 claims
- 2299US7852596B2Disk 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
- 2399US7800856B1Disk drive flushing write cache to a nearest set of reserved tracks during a power failureWESTERN DIGITAL TECH INC·Filed 2009·Granted Sep 21, 2010·149 cites·20 claims
- 2499US7760461B1Disk drive employing coarse position feedback from mechanical position sensor to improve format efficiencyWESTERN DIGITAL TECH INC·Filed 2008·Granted Jul 20, 2010·108 cites·6 claims
- 2599US7733189B1Oscillator comprising foldover detectionWESTERN DIGITAL TECH INC·Filed 2007·Granted Jun 8, 2010·128 cites·17 claims
- 2699US7729079B1Disk drive estimating fly height using a PLL tuned by a fly height capacitanceWESTERN DIGITAL TECH INC·Filed 2009·Granted Jun 1, 2010·143 cites·28 claims
- 2799US7701661B1Disk drive employing coarse position feedback from mechanical position sensor to improve format efficiencyWESTERN DIGITAL TECH INC·Filed 2008·Granted Apr 20, 2010·110 cites·13 claims
- 2899US7672072B1Disk drive modifying an update function for a refresh monitor in response to a measured durationWESTERN DIGITAL TECH INC·Filed 2007·Granted Mar 2, 2010·146 cites·23 claims
- 2999US7619841B1Disk drive subtracting low frequency disturbance from a servo burst signalWESTERN DIGITAL TECH INC·Filed 2005·Granted Nov 17, 2009·138 cites·12 claims
- 3099US7562282B1Disk drive employing error threshold counters to generate an ECC error distributionWESTERN DIGITAL TECH INC·Filed 2005·Granted Jul 14, 2009·149 cites·22 claims
- 3199US7551383B1Adjusting voltage delivered to disk drive circuitry based on a selected zoneWESTERN DIGITAL TECH INC·Filed 2006·Granted Jun 23, 2009·150 cites·29 claims
- 3299US7539924B1Disk drive implementing data path protection by encoding large host blocks into sub blocksWESTERN DIGITAL TECH INC·Filed 2005·Granted May 26, 2009·154 cites·16 claims
- 3399US7486060B1Switching voltage regulator comprising a cycle comparator for dynamic voltage scalingWESTERN DIGITAL TECH INC·Filed 2006·Granted Feb 3, 2009·154 cites·20 claims
- 3499US7480116B1Disk drive employing coarse position feedback from mechanical position sensor to improve format efficiencyWESTERN DIGITAL TECH INC·Filed 2006·Granted Jan 20, 2009·109 cites·4 claims
- 3599US7471483B1Disk drive compensating for rotational vibrations, physical shocks, and thermal poppingWESTERN DIGITAL TECH INC·Filed 2007·Granted Dec 30, 2008·150 cites·17 claims
- 3699US7471486B1Disk drive estimating seek time according to a seek profile and a variance groupWESTERN DIGITAL TECH INC·Filed 2007·Granted Dec 30, 2008·144 cites·24 claims
- 3799US7451344B1Optimizing order of error recovery steps in a disk driveWESTERN DIGITAL TECH INC·Filed 2005·Granted Nov 11, 2008·190 cites·14 claims
- 3899US7437502B1Disk drive adjusting operating mode based on historical proximity of host commandsWESTERN DIGITAL TECH INC·Filed 2005·Granted Oct 14, 2008·137 cites·26 claims
- 3999US7436610B1Disk drive employing different zone boundaries across disk surfacesWESTERN DIGITAL TECH INC·Filed 2005·Granted Oct 14, 2008·146 cites·16 claims
- 4099US7301717B1Servo writing a disk drive by integrating a spiral track read signalWESTERN DIGITAL TECH INC·Filed 2004·Granted Nov 27, 2007·181 cites·14 claims
- 4199US7203021B1Self-heating disk driveWESTERN DIGITAL TECH INC·Filed 2005·Granted Apr 10, 2007·186 cites·42 claims
- 4299US7136244B1Disk drive employing data averaging techniques during retry operations to facilitate data recoveryWESTERN DIGITAL TECH INC·Filed 2002·Granted Nov 14, 2006·249 cites·20 claims
- 4399US7126776B1Disk drive having a sector clock that is synchronized to the angular speed of the spindle motorWESTERN DIGITAL TECH INC·Filed 2002·Granted Oct 24, 2006·218 cites·2 claims
- 4499US7120737B1Disk drive employing a disk command data structure for tracking a write verify status of a write commandWESTERN DIGITAL TECH INC·Filed 2006·Granted Oct 10, 2006·188 cites·2 claims
- 4599US7113362B1Servo writing a disk drive by processing spiral tracks in an interleaved mannerWESTERN DIGITAL TECH INC·Filed 2005·Granted Sep 26, 2006·140 cites·7 claims
- 4699US7088545B1Disk drive decreasing head temperature to increase fly-height during seek operationWESTERN DIGITAL TECH INC·Filed 2005·Granted Aug 8, 2006·174 cites·27 claims
- 4799US7075746B1Disk drives and disk drive containing devices that include a servo frequency generator and spindle control timer that compensate for disk eccentricityWESTERN DIGITAL TECH INC·Filed 2005·Granted Jul 11, 2006·139 cites·9 claims
- 4899US7076604B1Disk drive employing a disk command data structure for tracking a write verify status of a write commandWESTERN DIGITAL TECH INC·Filed 2002·Granted Jul 11, 2006·196 cites·4 claims
- 4999US7062398B1Developing a disk drive manufacturing program by executing the manufacturing program on an external test systemWESTERN DIGITAL TECH INC·Filed 2005·Granted Jun 13, 2006·145 cites·17 claims
- 5099US6977789B1Disk drive for circular self servo writing and spiral self servo writing using prewritten reference servo burstsWESTERN DIGITAL TECH INC·Filed 2002·Granted Dec 20, 2005·153 cites·20 claims
Showing the top 50 of 5,398 patent records by PatentIndex Score.
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