Inventor · disambiguated record
Kiankeong Ooi
Also filed as: OOI KIAN KEONG · OOI KIANKEONG
45 granted patents·8 pending applications·641 citations·filing 1999–2018
98Inventor score
Top patents by PatentIndex Score
53 records- 0195US7405893B2Data storage medium with optimized servo formatSEAGATE TECHNOLOGY LLC·Filed 2005·Granted Jul 29, 2008·35 cites·20 claims
- 0294US7319570B2Random vibration and shock compensator using a disturbance observerSEAGATE TECHNOLOGY LLC·Filed 2005·Granted Jan 15, 2008·44 cites·19 claims
- 0394US6437936B1Repeatable runout compensation using a learning algorithm with scheduled parametersSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Aug 20, 2002·80 cites·19 claims
- 0491US6690534B2Method and apparatus for handling multiple resonance frequencies in disc drives using active dampingSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Feb 10, 2004·38 cites·24 claims
- 0591US6563663B1Repeatable runout compensation using iterative learning control in a disc storage systemSEAGATE TECHNOLOGY LLC·Filed 1999·Granted May 13, 2003·68 cites·18 claims
- 0690US10049692B1Closed-loop fly height control using sector-specific, repeatable VGA valuesSEAGATE TECHNOLOGY LLC·Filed 2015·Granted Aug 14, 2018·10 cites·20 claims
- 0788US6751036B2Tuning track density for data storage deviceSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jun 15, 2004·30 cites·15 claims
- 0887US6628471B1Detection and cancellation of cage frequency using the clock head in a servowriterSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Sep 30, 2003·29 cites·20 claims
- 0986US7872827B2Impact protection for a retractable control objectSEAGATE TECHNOLOGY LLC·Filed 2007·Granted Jan 18, 2011·9 cites·20 claims
- 1086US7760456B2Data protection based on system vibration modesSEAGATE TECHNOLOGY LLC·Filed 2007·Granted Jul 20, 2010·7 cites·20 claims
- 1186US7576939B2Discontinuous mode back EMF measurementSEAGATE TECHNOLOGY LLC·Filed 2007·Granted Aug 18, 2009·7 cites·17 claims
- 1286US6859341B2Method and apparatus for feedforward repeatable runout compensation in a selected frequency rangeSEAGATE TECHNOLOGY LLC·Filed 2003·Granted Feb 22, 2005·21 cites·28 claims
- 1385US8467144B2Determining microactuator failure in a multi-stage tracking systemLIM KANG HAI·Filed 2011·Granted Jun 18, 2013·13 cites·20 claims
- 1485US8120868B2Data storage medium having system data stored in a guard band between zones of consecutive data storage tracksBI QIANG·Filed 2008·Granted Feb 21, 2012·13 cites·23 claims
- 1584US7596795B2Vibration compensation based on identification of vibration frequencySEAGATE TECHNOLOGY LLC·Filed 2007·Granted Sep 29, 2009·8 cites·12 claims
- 1684US6762571B2Sinusoidal feed-forward seek with adaptive acoustic level constraintSEAGATE TECHNOLOGY LLC·Filed 2002·Granted Jul 13, 2004·18 cites·11 claims
- 1784US6574067B2Optimally designed parsimonious repetitive learning compensator for hard disc drives having high track densitySEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jun 3, 2003·18 cites·20 claims
- 1883US7595957B2Servo gain adjustment based on bias force errorSEAGATE TECHNOLOGY LLC·Filed 2007·Granted Sep 29, 2009·5 cites·15 claims
- 1983US7133227B2Head polarity detection algorithm and apparatusSEAGATE TECHNOLOGY LLC·Filed 2004·Granted Nov 7, 2006·19 cites·16 claims
- 2083US6704159B2Automatic acoustic management system for a disc driveSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Mar 9, 2004·18 cites·17 claims
- 2182US9304930B2HDD write buffer zone for vibration conditionSEAGATE TECHNOLOGY LLC·Filed 2014·Granted Apr 5, 2016·6 cites·18 claims
- 2282US7199964B2Adaptive voltage-mode controller for a voice coil motorSEAGATE TECHNOLOGY LLC·Filed 2005·Granted Apr 3, 2007·5 cites·20 claims
- 2378US6674589B2Method for harmonic frequency identification in a disc driveSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jan 6, 2004·13 cites·20 claims
- 2476US7715145B2Variable spindle speed for ramp unloadSEAGATE TECHNOLOGY LLC·Filed 2008·Granted May 11, 2010·4 cites·20 claims
- 2576US6674604B1AC unlatch using grey code detection with zone partitioningSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Jan 6, 2004·13 cites·20 claims
- 2675US9117471B1AC MR-offset compensationSEAGATE TECHNOLOGY LLC·Filed 2014·Granted Aug 25, 2015·3 cites·19 claims
- 2775US6731444B2Head-disc assembly with embedded product identification codeSEAGATE TECHNOLOGY LLC·Filed 2001·Granted May 4, 2004·13 cites·21 claims
- 2875US6710965B2Phase-advanced filter for robust resonance cancellationSEAGATE TECHNOLOGY LLC·Filed 2002·Granted Mar 23, 2004·10 cites·19 claims
- 2975US6636375B1Seek in a disc drive with nonlinear pivot frictionSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Oct 21, 2003·11 cites·16 claims
- 3074US6995946B2Temperature compensation of seek profiles in data storage devicesSEAGATE TECHNOLOGY LLC·Filed 2003·Granted Feb 7, 2006·10 cites·27 claims
- 3172US6744587B2Motor control circuit with adaptive controller path selection for different load conditionsSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jun 1, 2004·10 cites·20 claims
- 3271US7627778B2Prediction-based data reassignmentSEAGATE TECHNOLOGY LLC·Filed 2006·Granted Dec 1, 2009·6 cites·18 claims
- 3367US7295395B2Sensing a prior transducer position by a motion patternSEAGATE TECHNOLOGY LLC·Filed 2004·Granted Nov 13, 2007·8 cites·25 claims
- 3466US10204650B1Closed-loop fly height control using transfer function between harmonic response and heater inputSEAGATE TECHNOLOGY LLC·Filed 2018·Granted Feb 12, 2019·1 cites·20 claims
- 3566US7242546B2Determining a location based on a cyclic bit sequence containing consecutively-placed identical bit-groupsSEAGATE TECHNOLOGY LLC·Filed 2003·Granted Jul 10, 2007·6 cites·24 claims
- 3666US6882497B2Track closure error cancellation for a disc driveSEAGATE TECHNOLOGY LLC·Filed 2002·Granted Apr 19, 2005·6 cites·17 claims
- 3766US6324890B1Method of characterizing and screening voice coil motor pivot friction in a low velocity regionSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Dec 4, 2001·6 cites·16 claims
- 3863US7170249B2Electrical phase compensation in BEMF spindle motor controlSEAGATE TECHNOLOGY LLC·Filed 2005·Granted Jan 30, 2007·5 cites·20 claims
- 3963US6687065B2Resonance screen with varying frequency and controllable gain boosterSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Feb 3, 2004·6 cites·12 claims
- 4062US7190542B2Acoustical noise reduction for a data storage deviceSEAGATE TECHNOLOGY LLC·Filed 2004·Granted Mar 13, 2007·5 cites·16 claims
- 4156US7397623B2Using a mechanical stop for determining an operating parameter of a data handling deviceSEAGATE TECHNOLOGY LLC·Filed 2003·Granted Jul 8, 2008·3 cites·17 claims
- 4247US6674607B2Method and apparatus for determining high order polynomials for linearization of position signalsSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jan 6, 2004·1 cites·19 claims
- 4345US8702073B2Shock absorber capable of damping vibrationLIM JUIJING·Filed 2007·Granted Apr 22, 2014·0 cites·13 claims
- 4443US2008048595A1Active brake for spindle motorSEAGATE TECHNOLOGY LLC·Filed 2006·Application pending·0 cites
- 4541US8635491B2Storage device maintenance in a portable device based on a power eventDING MINGZHONG·Filed 2007·Granted Jan 21, 2014·0 cites·17 claims
- 4640US9111560B1Dynamic configuration of seek recovery in a disk driveSEAGATE TECHNOLOGY LLC·Filed 2015·Granted Aug 18, 2015·0 cites·20 claims
- 4740US2005034539A1Motor torque variation compensationFiled 2004·Application pending·0 cites
- 4839US2004075934A1Apparatus and method for retracting an actuatorFiled 2003·Application pending·0 cites
- 4938US2012044593A1Temperature induced head skewXIAO YONG·Filed 2010·Application pending·0 cites
- 5038US2002039246A1Variable TPI data recording in hard disc drivesFiled 2001·Application pending·0 cites
Showing the top 50 of 53 patent records by PatentIndex Score.
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