Inventor · disambiguated record
Hyung Jai Lee
Also filed as: LEE HYUNG J · LEE HYUNG JAI
36 granted patents·9 pending applications·361 citations·filing 1997–2009
97Inventor score
Files withSAMSUNG ELECTRONICS CO LTD33KWON HAESUNG4SAMSUNG ELECTRONICS CO LDT2SHARMA VINOD2HAN YUN-SIK1
Top patents by PatentIndex Score
45 records- 0196US7282836B2Method and apparatus for a D33 mode piezoelectric actuator with a bending motionSAMSUNG ELECTRONICS CO LTD·Filed 2005·Granted Oct 16, 2007·51 cites·16 claims
- 0292US7336436B2Head gimbal assemblies for very low flying height heads with optional micro-actuators in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Feb 26, 2008·39 cites·16 claims
- 0391US8194345B2Method and apparatus for dampening and filtering air flow effects in a hard disk driveKWON HAESUNG·Filed 2008·Granted Jun 5, 2012·14 cites·9 claims
- 0491US7576940B2Method and apparatus for estimating micro-actuator stroke sensitivity in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Aug 18, 2009·12 cites·30 claims
- 0591US7333288B2Method and apparatus for single written-in Repeatable Run-Out correction function used in multi-stage actuation control of hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Feb 19, 2008·13 cites·22 claims
- 0689US7280305B2Method and apparatus for estimating and controlling the flying height of a read-write head in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Oct 9, 2007·9 cites·28 claims
- 0786US7573668B2Method and apparatus for sensing leakage current to estimate and possibly adjust flying height of a read-write head in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Aug 11, 2009·7 cites·30 claims
- 0886US7385780B2Online identification of secondary actuator transfer function via system decoupling in multiple-stage actuator servo systems in disk drivesSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Jun 10, 2008·7 cites·10 claims
- 0986US7130160B2Method and apparatus for a micro-actuator providing three-dimensional positioning to a slider in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Oct 31, 2006·18 cites·28 claims
- 1084US7667932B2Method and apparatus using embedded sensor in a piezoelectric micro-actuator in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Feb 23, 2010·7 cites·22 claims
- 1182US6411468B1Pseudo-contact negative pressure air bearing slider with dual negative pressure pockets and central transducerSAMSUNG ELECTRONICS CO LTD·Filed 2000·Granted Jun 25, 2002·16 cites·12 claims
- 1281US7974045B2Apparatus and method for a piezoelectric micro-actuator for a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Jul 5, 2011·5 cites·19 claims
- 1380US7583468B2Method and apparatus of dual stage servo control with dual control paths and decoupling feedback for track following in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2005·Granted Sep 1, 2009·4 cites·34 claims
- 1480US7009804B2Method and apparatus for micro-actuator stroke sensitivity calibration in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Mar 7, 2006·14 cites·23 claims
- 1580US6326553B1Scheme to avoid electrostatic discharge damage to MR/GMR head gimbal/stack assembly in hard disk applicationsSAMSUNG ELECTRONICS CO LTD·Filed 1999·Granted Dec 4, 2001·48 cites·18 claims
- 1678US6710594B2Method and apparatus supporting magnetic performance measurement of merged read-write heads using the write current and read currentSAMSUNG ELECTRONICS CO LTD·Filed 2002·Granted Mar 23, 2004·16 cites·30 claims
- 1771US7206160B2Method and apparatus of micro-actuator control of the flying height of a read/write head in a hard disk driveSAMSUNG ELECTRONICS CO LDT·Filed 2005·Granted Apr 17, 2007·2 cites·17 claims
- 1869US8199438B2In-situ dynamic pitch and roll adjustment in hard disk drivesSHARMA VINOD·Filed 2009·Granted Jun 12, 2012·1 cites·13 claims
- 1968US7558026B2Method and apparatus for a single piezoelectric micro-actuator in a head gimbal assembly of a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Jul 7, 2009·1 cites·17 claims
- 2068US6747843B2Ramp design for reducing read-write head track positioning errorsSAMSUNG ELECTRONICS CO LTD·Filed 2002·Granted Jun 8, 2004·7 cites·14 claims
- 2167US8199568B2Method and apparatus for a disk damper including an enclosing flow chamber wall for a hard disk driveKWON HAESUNG·Filed 2009·Granted Jun 12, 2012·1 cites·6 claims
- 2265US7248443B2Method and apparatus for a MEMS micro-actuator assembly in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Jul 24, 2007·5 cites·20 claims
- 2364US7612967B2Method and apparatus coupling at least one piezoelectric device to a slider in a hard disk drive for microactuationSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Nov 3, 2009·5 cites·29 claims
- 2464US7009803B2Method and apparatus of dual stage servo control for track following in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Mar 7, 2006·5 cites·20 claims
- 2564US5822163AMagnetic disk having surface lubrication layers of different thicknessSAMSUNG ELECTRONICS CO LTD·Filed 1997·Granted Oct 13, 1998·17 cites·4 claims
- 2663US7697236B2Method and apparatus for disk damper extending across all data tracks of a rotating disk surface upwind of the voice coil actuator in a hard disk driveSAMSUNG ELECTRONICS CO LDT·Filed 2006·Granted Apr 13, 2010·1 cites·16 claims
- 2760US6593736B1Method and apparatus stabilizing the magnetic domain of merged magnetoresistive read-write heads using dc write current and read bias currentFiled 2002·Granted Jul 15, 2003·5 cites·29 claims
- 2860US6178062B1Balance tube for a spindle motor assembly of a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 1998·Granted Jan 23, 2001·14 cites·15 claims
- 2958US8279561B2Balanced motor micro-actuatorKWON HAESUNG·Filed 2008·Granted Oct 2, 2012·0 cites·14 claims
- 3057US6489762B2Method to detect junction induced signal instability from GMR/MR headsSAMSUNG ELECTRONICS CO LTD·Filed 2001·Granted Dec 3, 2002·3 cites·9 claims
- 3155US7440223B2Written-in repeatable run-out correction for hard disk drivesSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Oct 21, 2008·0 cites·8 claims
- 3250US2008304178A1High-flow rate filter wall designSAMSUNG ELECTRONICS CO LTD·Filed 2007·Application pending·0 cites
- 3350US2009034128A1Method and apparatus for independent piezoelectric excitation in the micro-actuator assemblies of a hard disk drive for improved drive reliabilitySHARMA VINOD·Filed 2007·Application pending·0 cites
- 3450US2008304183A1Flexure for head gimbal assembly with narrow gimbal width in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2007·Application pending·0 cites
- 3549US2008278849A1Flow balancer for track misregistration improvementSAMSUNG ELECTRONICS CO LTD·Filed 2007·Application pending·0 cites
- 3648US8064172B2Method and apparatus coupling to a slider in a hard disk drive for microactuationKWON HAESUNG·Filed 2005·Granted Nov 22, 2011·0 cites·31 claims
- 3747US2008094748A1Top disk-damper imbedded hard disk driveHAN YUN-SIK·Filed 2006·Application pending·0 cites
- 3847US2006109585A1Method and apparatus using micro-actuator stroke sensitivity estimates in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2006·Application pending·0 cites
- 3947US2009210206A1Method and for wide track erasure in a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 2008·Application pending·0 cites
- 4045US6950282B2Device for reducing damage due to head slap within a hard disk driveSAMSUNG ELECTRONICS CO LTD·Filed 1998·Granted Sep 27, 2005·7 cites·7 claims
- 4144US7630167B2Method and apparatus to detect sub-micron particles in a hard disk drive with optical pickupSAMSUNG ELECTRONICS CO LTD·Filed 2004·Granted Dec 8, 2009·0 cites·13 claims
- 4243US6088199AMagnetic disk for self-cleaning a disk drive recording headSAMSUNG ELECTRONICS CO LTD·Filed 1997·Granted Jul 11, 2000·5 cites·10 claims
- 4343US2008002302A1Method and apparatus for head gimbal assembly with improved shock performance in hard disk driveKWON HAE-SUNG·Filed 2006·Application pending·0 cites
- 4440US2005105218A1Method and apparatus controlling communication in the main flex and bridge flex circuits for multiple micro-actuators in a hard disk driveFiled 2003·Application pending·0 cites
- 4535US6031697AMethod of cleaning disk drive recording headSAMSUNG ELECTRONICS CO LTD·Filed 1998·Granted Feb 29, 2000·2 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →